The XX1 power meter runs for 200 hours on a single CR2032 battery and comes with a full 2-year warranty. Trustpilot rating 9.4/10; Easy 30 day Returns Policy; Shipping Costs Always 9.99 Trustpilot rating 9.4/10; Agreed and good job on your training Giacomo! SRAM. I'm definitely never getting another P2M with all the other quality product on the market these days. I have a SRAM MTB crankset. Critics would argue it wanted the upper hand over Shimano, but SRAM says that by increasing the cog size theres even less chance that youd need to get off and walk your bike up a climb. Tailored to the needs of drop bar riders, SRAM's new 1x-specific XPLR AXS wireless drivetrains target a gearing sweet spot. Thank you for taking the time to leave us an awesome review! Some riders test their limits more than others. For the first time, carbon joins the line up with the optional GX Eagle carbon crankset delivering consistent all day performance every time out. These training tools offer more benefits than we can list. To work properly, this page requires JavaScript to be enabled or to use the most recent versions of Google Chrome, Safari, or Firefox. For an improved shopping experience, we recommend that you use the most recent versions of Google Chrome, Safari, or Firefox. GEAR SHIFT MTB SRAM XX1 EAGLE TRIGGER 12SP BLACK -R 6000. SRAM GX Eagle Groupset Lunar Mech, Trigger, DUB Crank 170, Chain, Cass 52T (non-boost) 2022 Berwick Cycles - Narre Warren FREE shipping within Australia Now AU$5,714.25 AU$7,619 SRAM RED eTap AXS Disc Brake Groupset w/ 172.5mm Quarq Powermeter crankset 2022 Berwick Cycles - Narre Warren Ships within Australia AU$889 With an expanded, 520-percent gear range giving riders more ability to spin and recover on the burliest climbs, and an open design that aids in mud clearance, giving riders crisp shifting performance and longer component life. Either you have JavaScript disabled or your browser does not support JavaScript. That is exactly what the DZero DUB power meter is made for. If there is anything else we can help you with, please let us know! Crankset: This power meter works with SRAM XX1 Eagle DUB 8-bolt cranksets. The aggressive teeth design provides better chain retention for a smoother, more efficient pedal feel. Thanks for this awesome review on your Quarq SRAM XX1 Eagle DUB Power Meter. This is also a great power meter. If you have dub or bb30 then you get the stages carbon 30 and if you have gxp then you get the GXP Stages. Chain. So for a moving bicycle, Power = Torque x Cadence. Links to YouTube, Facebook, Twitter and other services inserted in the comment text will be automatically embedded. All Legacy model power meters feature ANT+ wireless data transfer ONLY and must be used with a cycling computer that supports ANT+ power meter use. Forriders who prioritize all day function over anything else. Rob manages all of the testing here at BikeRadar and across our magazines, Mountain Biking UK and Cycling Plus. You cant go wrong. The customer service here is amazing, I managed to order the wrong thing twice and Josh contacted me before shipping and fixed my mistake on their end. For GXP, both . Also great customer service from Powermeter City! SRAM's aluminium X-SYNC 2 GX Eagle DM Boost mountain bike chainring has a relatively low weight and excellent rigidity. Mike M (verified owner) February 26, 2020. He cut his teeth racing cross-country mountain bikes in the early 90s before finding his feet in downhill. Thanks Quagga. Combine the brand's dependable-workhorse groupset, with the precision shifting of its AXS range, and . In fact, back in 2018, we awarded the outgoing 12-speed 50t Eagle 4.5 out of 5 stars, impressed by its reasonable cost and shifting prowess. DZero DUB/ DFour DUB Power Meter Crank Arms: Now $196 (previously $381) DZero for Specialized Power Meter Spiders: Now $399 (previously $779) That's a pretty massive drop - $200 less for the DUB power meters, and a $380 drop for the Specialized DZero units. Report Incorrect Product Listing. A power meter measures power by tracking the amount of torque produced by your pedaling and multiplying that number by cadence, or how fast you're pedaling. This applies to standard trail width cranks using BB30, PF30, PF92, and BSA bottom brackets. By submitting this form, you consent to the processing of the above information in the U.S. by SRAM LLC. Rondo Ruut Tubeless ready 622-21. Either you have JavaScript disabled or your browser does not support JavaScript. |, USD $545.00 Other updates to the 2021 SRAM GX Eagle drivetrain beyond the redesigned cassette include a derailleur with revised pulley wheel offsets, a shorter cage and larger parallelogram section with new springs and pivot hardware. Quarq AXS Dzero XX1 Eagle DUB Power Meter Spider . However, unlike the two previous power meters listed which fit SRAM XX1 3-bolt cranksets, the Quarq only fits SRAM XX1 Eagle DUB 8-bolt cranksets. and you get a very accurate total power reading. If you are unsure, please contact us and we will do our best to help. The app also track firmware updates and the battery status as well as preforming system diagnostics. Please see the image below. The Stages Carbon for 30mm and Mountain GXP models are compatible with a wide variety of cranksets from SRAM. The power meter comes loaded with features such as MagicZero, whereby it automatically calibrates (offsets) as you ride. SRAM Eagle SL Cassette. See SRAM'sPrivacy Policyfor a detailed explanation of how your personal data is used. QUARQ XX1 Eagle Dub 8 Bolt Crankarm Set (No Power Meter) R 9,500.00 from R 8,190.00 Save R 1,310.00. XX1 Eagle Power Meter, PM-DZ-SPDM-D1, SRAM. Just a great power meter And the best service you can get:Powermetercity! I already have 2 years using that configuration with no problem (sram eagle cassette with kmc 12 speed chain and the shimano cranks and chainring) Installing the XX1 Eagle power meter crankset is as simple as normal cranks. Anyways, great product, and PowerMeter City has great prices, and great customer service. Crank arms: You can purchase the power meter with or without crank arms. Not for use with front derailleur drive trains Recessed chain rivet contact area . Sram have used 2 standards for attaching spiders, 3 bolt and 8 bolt. Grab your bike, smart phone, and cycling computer and complete the following steps. To work properly, this page requires JavaScript to be enabled or to use the most recent versions of Google Chrome, Safari, or Firefox. Same link geometry as XX1 Eagle, with solid pins and a more modest finish treatment. It is made to work SRAM 1x and 2x GXP mountain cranks. The XX1 Eagle DUB 1-speed power meter with a bolt circle diameter of 104 millimeters is ideally suited for SRAM 1x12 X-Sync 2 chainrings. The cranks, chain, and cassette carry over unchanged. These cranksets are labeled on the side of the crank with the "156" q-factor. Manage your Stages Power meter in the Stages Cycling app. By submitting this form, you consent to the processing of the above information in the U.S. by SRAM LLC. But the Trek factory spec sheet says that what I have is "SRAM Stylo Carbon Eagle, 32T" and the BB is PF92. The SRAM Battery Cover adds a stylish, protective cowling around your battery to ensure it stays safe and protected from impacts. The Ecosystems control center and the hardline to your bicycles drivetrain, the GX Eagle shifters positive feel gives the right rider input to make shifts crisp time after time. While Robs a mountain biker at heart and never happier than when hes sliding down a Welsh hillside, hes more than happy to put the miles in on the road or gravel bike, too. Yes. Stages Power L Carbon Cycling Power Meter for 30mm - SRAM Race Face Next SL & FSA 386EVO. My mountain bike though is SRAM GX. It is a common unit used to express effort exerted. Cube Stereo Hybrid 140 HPC TM 750 Electric Full Suspension MTB Sram GX Eagle 12S 750 Wh 29'' Flash Grey Olive Green 2023. I have a 4iii "left side only" Ultegra power meter on my road bike, which works and meets my needs just great. To work properly, this page requires JavaScript to be enabled or to use the most recent versions of Google Chrome, Safari, or Firefox. Placed an order on PowerMeter City and it shipped out quickly. Sram. GX Eagle AXS controller is highly customizable with options to swap paddle shapes, reassign touch points with the AXS app and choose from AXS Discrete or MatchMakerX clamps. Dropping back into the 42t is a little more abrupt due to that sizeable jump, and the change in cadence feels a little more pronounced, but not unpleasantly so. Same result. The SRAM Eagle crankset versions follow the same compatibility as their non-Eagle equivalents. TECH TIP: When connecting to the AXS App, make sure your phone has good signal and is not connected to any other Bluetooth devices, enable Bluetooth in the phone settings for the app, then connect to your power meter. Stages Power L Carbon Cycling Power Meter for 30mm - SRAM Race Face Next SL & FSA 386EVO, Stages Power L Stages Carbon SRAM Road GXP Left Crank Arm Cycling Power Meter, Stages Power L Stages Carbon SRAM MTB GXP Left Crank Arm Cycling Power Meter. Get 10% off a new power meter. Chainrings: This power meter requires a 104 BCD 4-bolt chainring MTB chainring (which is different than the direct mount chainrings found on many SRAM MTB cranksets). Ride safe! For the best experience on our site, be sure to turn on Javascript in your browser. I'm not sure if the software caters for oval chainrings yet but a unit that measures total power is going to be more accurate than a left side only unit with an oval ring. 1 Left . Let us know if there is anything else we can do! If you believe your bike may come with an OEM-specific crankset variant, please open up a submit ticket and provide us with any information regarding your bike spec to see if there is a solution. Long days, quick rides and everything in-between, GX Eagle is the ecosystem at its best. We hope you will enjoy your new Quarq SRAM XX1 Eagle DUB Power Meter! Stem. Already have an account with us? The SRAM RED AXS power meter breaks with tradition and breaks through to new levels of performance. In Stock. Each touchpoint can upshift, downshift and operate the dropper. SRAM GX Eagle 12-Speed Chain 126 links With PowerLock, Silver/Gray The chain is the heart of the Eagle 1x12 drive train, ensuring quiet operation, long life and precise shifting. $483 Model ID PM-AXS-SPDR-D1 Features AXS enabled for easy monitoring and firmware upgrades Bluetooth Low Energy and ANT+ compatible Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride See more features POWER METER RECYCLING PROGRAM Get 10% off a new power meter. SIGN UP FOR EXCLUSIVE OFFERS, UPDATES AND PROMOTIONS. Thanks PMCity! although the manufacturers say it is not possible, I changed my cranks and chainring from sram Eagle GX to Shimano XT 12 speeds with 4iiii power meter. That said, Ive tended to stay in the 42t cog for a little longer than usual (when compared to using the 10-50t cassette), especially on more technical climbs where the 52t spins a little too easily and simply doesnt offer enough controlled grunt when you really need it. The GX Eagle chain, featuring solid-pin construction, is designed with Eagle geometry for smooth efficient shifting, and improved wear resistance on chainring and cassette. No need for a new axle either. Hi Tom. Please see our article for more information: The smallest chainring that typically fits on a Quarq Power Meter is a 32T round chainring or a 34T oval. Made specifically to work with SRAM, Easton and Race Face cranksets. MudLark SRAM Boost mountain bike cranksets follow the same compatibility rules as their non-boost equivalents. All Rights Reserved. designed to analyze shifting, gear use, power zones and tire pressure. The new SRAM GX Eagle derailleur in detail. Loving the precision, simplicity and data I get from each workout session, definitely game changing! But they supplied on time and I get what I needed. Another major change for Force 2023 comes at the chainset. The SRM is available in both standard and Boost configurations, features +/- 1.0% accuracy, a 3-year warranty and can fit rings as small as 30T. GX Eagle AXS combines rugged durability with connected wireless technology that's made for the mountain. The only difference is on the drive side, so there's no difference in compatibility. Torque specifications for SRAM bicycle components, compiled in a single place for quick and easy reference. With an expanded, 520-percent gear range giving riders more ability to spin and recover on the burliest climbs. For an improved shopping experience, we recommend that you use the most recent versions of Google Chrome, Safari, or Firefox. Great product, easy purchase, nice to be able to order all pieces (crank and chainring) together with the spider to ensure compatibility through one interface on the site here. This power meter works with SRAM XX1 Eagle DUB 8-bolt cranksets. Designed with SRAM's Eagle geometry, the GX Eagle chain features solid pin construction, Eagle PowerLock and smooth, efficient shifting that you can count on every time out. I'm trying to figure out what my options are for a power meter on the mountain bike But it's a bit confusing to say the least. Even after a couple of months, shifting continues to feel smooth and accurate, and it all comes in at a reasonable price. You are working hard, pushing yourself to new heights in some of the toughest conditions. My cousin eventually tracked down his wife's work phone number after he went quiet with the money. The newer NG and NGeco models have had significant improvements over previous models with almost zero manufacturing defects. Mix and match with chains and cassettes available in Black, Gold, Rainbow and Copper to curate a look thats all you. For more info, check out their websites and apps. If youre thinking of simply buying the new, wider range cassette to work with your original Eagle rear mech, unfortunately SRAM says that the first-generation Eagle derailleurs arent compatible. Crankset. GX Eagle AXS does. Super quick shipment and arrival. It features our X-SYNC 2 tooth profile chainring for complete chain control, and DUB technology for better sealing and endless compatibility. The 10-52T cassette ($215), crankset ($135), derailleur ($125), shifter ($45), and chain ($33) combo will set you back about $545 (for the group price). Hi Mike. Theres no change at the shifter, but thats no bad thing. I like the light feel of Shimano but my XTR was a tad too light. We do not currently have a compatible spindle that will allow for compatibility with a BB30 or DUB fat bike crankset. At 290g, the new GX Eagle rear mech weighs just 14g more than the X01 equivalent but costs almost half as much. Bike Addict's selection of SRAM components is competitively priced and we stock everything you need to kit your bike out. The XX1 Eagle Power Meter Crankset brings tech over from SRAM's road cycling line and makes it available to the cross-country MTB crowd. Eagle features all-new 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. add in a 104bcd quarq Xsync 2 chainring and you are sorted, https://www.bicyclepower.co.za/product/power2max-ngeco-mtb-sram-single-power-meter-standard/, Thanks Diesel, much appreciated! The store will not work correctly in the case when cookies are disabled. The new cassette looks like it's going to be the Eagle SL cassette. Stacy (verified owner) February 3, 2023. For an improved shopping experience, we recommend that you use the most recent versions of Google Chrome, Safari, or Firefox. While SRAMs AXS Web provides component data that other training tools cant, many indoor and outdoor training tools can help you train and interpret power meter metrics. If your SRAM crankset uses the GXP standard, you can install the Stages GXP for SRAM Power Meter. Most bikes come with SRAM 3-bolt cranksets, so its important you confirm which version you have. Though they will still bolt together with the equivalent left crank option, the crankset will be asymmetrical due to the mismatch in offset. We appreciate your business and are here if there is anything else we can do! Looks like you are enjoying your new Quarq SRAM XX1 Eagle DUB Power Meter, Tony! I'll be getting a pair of Favero Assioma's from them next. Help us reduce our impact. AXS enabled for easy monitoring and firmware upgrades, Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride, Uses a common CR2032 battery that last for 200 riding hours and changes without tools. In most cases, we recommend the Quarq SRAM X-SYNC 2 12-Speed Chainrings for best performance (also available on this page). kyle (verified owner) January 27, 2023. Your RatingRatePerfectGoodAverageNot that badVery Poor, Attachment The maximum upload file size: 5 MB. Like other Eagle groups, it gets its own group master colorway as part of our new Eagle Colorsystem, allowing for full group or fully curated builds. Needed a battery cover so I called and since they were coming to Cape Town 2 weeks later they offered to bring it along. Thanks to the addition of that big 52t cog, the GX Eagle gear range now on offer is a whopping 520 per cent (Shimanos is 510 per cent for reference). For these riders, the GX Eagle DUB crankset allows them to go all in, every day they ride. While that 52t cog might not see quite as much action as the previous 50t, its nice to know its there for when its really needed. To help clear up any confusion on your specific model, we have a few tips on determining if your SRAM mountain crankset is compatible. The new GX mech gets a revised pulley wheel offset, a shorter cage and lengthened parallelogram along with new spring and pivot hardware, all of which help increase chain wrap which should help boost cassette and chain life as well as improve shift feel. Check out the SRAM. With approximately 200 hours of battery life from a single coin cell battery, youll get lots of ride time from your unit. Power Meters and Computers; Gravel Gear and Kit; Groupsets and Components; Know's Notes; My Take; Join KNOW'S CLUB; Learn ABOUT US. Connecting 3rd party apps to Stages Cycling app. Therefore, you should make sure you have at least 10 mm of clearance for Stages power meters. Quarq AXS Dzero XX1 Eagle DUB Power Meter Spider Vendor: SRAM. It ensures that switching remains sharp and consistent across the entire cassette of the gear ratio of 10 to 52 of the Eagle cassette. $564.99. Riders can quickly and easily learn more about how their bike is working for them and consider adjustments. Either you have JavaScript disabled or your browser does not support JavaScript. The SRAM Eagle crankset versions follow the same compatibility as their non-Eagle equivalents. The ultimate spider-based power meter for your SRAM XX1 crankset! The open design similar to SRAM's X-Dome cassette aids in mud clearance, giving you cleaner shifting performance and longer component life. Ride safe! They seem to work fine, the chainring just clears the frame, and the chainring sits nicely in the middle of the cassette. Hi Matt. If your SRAM crankset is BB30 or DUB, you can install the Stages SRAM BB30 Power Meter. So for a moving bicycle, Power = Torque x Cadence. Bought the Quarq SRAM XX1 Eagle DUB Power Meter for a Yeti SB100 and it works great! These hold the chain reliably on the chainring even without a chain guide. So you will need a power2max compatible MTB chainring as well. Both shifters feature X-Actuation technology. On some bikes, there is not enough room between the left crank arm and the chainstay for the sensor to clear the frame. Perform Manual Zero calibration before every ride to ensure youre getting the most accurate power data. Our incredibly resilient Overload Clutch design allows the derailleur to sense impact and safeguard against potential damage. To work properly, this page requires JavaScript to be enabled or to use the most recent versions of Google Chrome, Safari, or Firefox. Your browser does not support all of our websites functionality. One thing to note, my Yeti came with a 30 tooth chainring and I wanted to keep 30 tooth as I will be racing the Leadville 100 with this bike, and didnt want to go any higher than a 30T chainring for that long grueling race! Modified on: Mon, 5 Dec, 2022 at 7:58 AM. This ensures consistent operation, maximum battery life, and prevents corrosion. Connecting it to the head unit is also very quick and QUARQ offers the QALVIN BLE app which makes setting up the power meter super easy. Please see the image below. Connect your bike computer to AXS Web to capture ride reports to review your power and cadence charts, ride stats, and make informed gearing decisions. Overall, I really liked the revised GX Eagle gearing. Please note, the power2max uses a 104 BCD chainring configuration. The cover is also compatible with our existing XX1 and X01 Eagle, The AXS App is the built-in componentry software that makes it possible to connect, personalize AXS enabled components from SRAM, RockShox, Zipp and. If round rings are your preference then there's no looking back. Spindle G is incompatible with wider spindle cranksets such as SRAM DUB Wide and Super Boost variants. My frame is super boost. The GX Eagle cassette utilizes Full Pin technology that uses stamped steel cogs held together with high-strength stainless steel pins. With the Gripshift, you can operate the GX Eagle rear derailleur easily and intuitively. We make innovative and accurate technology to simplify every ride so you can become a more confident and inspired rider. BUT, Wolftooth makes a 30T 104BCD that has a cutout that allows for clearance. Thank you for taking us time to leave a great review on you Quarq Sram XX1 our very first one! They blamed my mechanic for over torquing the screw, but their new design changed this thing specifically. With the all new 520% range, all new colourways and seamless compatibility with the rest of the ecosystem, GX Eagle is there to maximize the potential of your ride experience. By submitting this form, you consent to the processing of the above information in the U.S. by SRAM LLC. I've checked it be with a park tool and both of the Shimano chain checkers we have. Yes The only difference is on the drive side, so there's no difference in compatibility. and the p2m assembly to the crank. If you have the 3-bolt version, you will need to purchase new 8-bolt cranks, as listed on this page, along with your power meter. Question: I see that SRAM does not provide a 30T chainring option for this Quarq XX1 power meter. So IT IS possible to keep your 30T with this set up. We hope you will enjoy them. By quickly disengaging the motor gearbox. Pros: Affordable, easy to install, dont have to change crankset Cons: Measures left leg power only. This one's still a 10-52 with 520% range, but the largest cogs are now 32/38/44/52 (versus the current 32/36/42/52). Enjoy the ultimate advantage of freedom and adventure that Eagle provides combined with the Quarq power meter platform that delivers on accuracy and r. Like others have said, you would need 8 bolt cranks to mount it so potentially need to upgrade depending on what model you have currently: sram.com With an expanded, 520-percent gear range giving riders more ability to spin and recover on the burliest climbs, and an open design that aids in mud clearance, giving riders crisp shifting performance and longer component life. So you will need a SRAM X-SYNC 2 12-Speed Chainring as well. The WT ring is compatible with 9-, 10-, and 11-speed chains. SRAM XX1 Eagle Power Meter Crankset - Boost $1,129.00 (1) Quarq Dzero DUB XX1 Power Meter Spider $645.00 (2) Quarq Sram XX1 Eagle DUB AXS Crank Arms $410.00 Stages Cycling Carbon MTB GXP L Gen 3 Power Meter Crank Arm $539.99 Stages Cycling Shimano XT M8120 Gen 3 R Power Meter Crank Arm $494.99 Stages Cycling Red light means its at or close to half charge. I had to start CC'ing global in mails to get a response from him. We are required to follow our brand's policies on shipping and we cannot ship this product outside the United States. Installation. The NX group is about $70 cheaper, but due to the fact that it has an 11-tooth cog on the high-endfor use on . And sure enough, it looks like this:https://www.evobikes.co.za/sram-stylo-carbon-dub-175mm-crank.html, though I think its maybe 172 (I'll have to check). and smooth, efficient shifting that you can count on every time out. , the derailleur has freedom to move out of harm's way, before instantly returning to its position for a seamless experience for the rider. Accurate setup using the new chain gap tool (which youll need to set the b-tension screw) is rewarded on the trail with smooth, quiet shifting. aceptas el procesamiento de la informacin anterior por parte de SRAM LLC en los EE.UU. Stages SRAM GXP 170mm MTB Carbon Crank Power Meter Add to Cart. No, Copyright Stages Cycling, LLC Most bikes come with SRAM 3-bolt cranksets, so it's important you confirm which version you have. This coating interferes with SRAM battery contacts and is not compatible with SRAM power meters. Compatibility. Saddles Seat Posts Dropper Seat Posts Pedals Power Meters Vintage Components All Components. Drop file here. SRAM Eagle XX1 Power Meter Quarq 2.67K subscribers Subscribe 104 29K views 3 years ago Get started with the SRAM Eagle XX1 power meter. Backwards compatible with both our original and expanded range Eagle Cassettes, the boundary to the next generation of shifting has never been more open. When you do run out of puff, switching up into that 52t cog does bring with it noticeable relief as well as a change of pace it truly is a bailout gear. It also is available . In fact, back in 2018, we awarded the outgoing 12-speed 50t Eagle 4.5 out of 5 stars, impressed by its reasonable cost and shifting . Service. Can I use a Quarq power meter? power2max NGeco SRAM MTB Power Meter Tyres. Panaracer Gravelking SS+. RED D1 DUB Crank Set 48/35 Teeth black. A power meter provides you with the information needed to build strength and improve your overall technique. Help us reduce our impact. The Quarq you've linked to uses the 8 bolt standard, while your cranks use the 3 bolt standard. Featuring an expanded 520% range, seamless compatibility with the rest of the ecosystem, and the ability to customize with the AXS app, GX Eagle AXS is your entry point to the future. By submitting this form, you consent to the processing of the above information in the U.S. by SRAM LLC. Reach out to your computer manufacturer for compatibility and display info. esigned with SRAM's Eagle geometry, the GX Eagle chain features solid pin construction, Eagle. Designed with SRAM's Eagle geometry, the GX Eagle chain features solid pin construction, EaglePowerLockand smooth, efficient shifting that you can count on every time out. The Quarq SRAM XX1 Eagle DUB Power Meter is the ultimate spider-based power meter for your mountain bike: accurate, durable and consistent in all conditions. SRAM is offering three one-piece cassettes; 10-26t, 10-28t, and 10-33t which combine with 1x and 2x chainrings the jumps between the 2x chainrings are 13-teeth in every combo. Find all the documentation needed to set up, use, and maintain your components in the SRAM Service hub. Therefore, for 30T applications, we ship a Wolf Tooth Components 1x 104 BCD MTB Chainring. It is a lighter, simpler, more durable and easier to use. SRAM GX Eagle B-Bolt and Limit Screw Kit. GROUP (0) GROUP. A watt is a basic unit of power equal to 1 joule per second. Eric Beausejour (verified owner) August 5, 2021. We reengineered road gearing: reducing front chainring size and adding more range to the rear cassette. Available sizes are: *The Quarq SRAM X-SYNC 2 12-Speed Chainring is not offered in a 30T.