Designed for the highest speed environments and modern tire widths, the Ultegra C60 wheelset shares its all-carbon rim profile with Dura-Ace but employs a hub that is compatible with both 12 and 11-speed cassettes. For situations where aerodynamics is the priority, the new Ultegra R8170 C60 wheelset features an all-carbon, 21 mm internal, tubeless compatible rim and a super-fast cup and cone bearing hub that is compatible with both 12 and 11-speed cassettes.WH-R8170 TL carbon clincher disc brake designed to meet pro road race criteriaLightweight clincher full carbon 60 mm deep rim for improved aerodynamics, increased rigidity and excellent inertia for sprinters and TT specialistsEasy to use Centre Lock rotor mount for use with disc brakesStainless steel butted (2.0-1.8-2.0) and bladed straight pull spokes for optimal balance and rigidityElbow-less spokes make for a strong yet compliant wheelHigh lateral rigidity is produced with a wide flange spacingLabyrinth double-contact sealing effectively shuts out water and dirtAlloy cone with integrated steel Borozon treated bearing races - super mirror finish reduces frictionCold forged, machined aluminium hub shell and oversized 7075 alloy axle keep the wheel weight to a minimumFor 100 x 12 mm axle700C clincher compatible
Balancing aerodynamics, weight, and affordability, the new Ultegra R8170 C50 wheelset is sure to inspire action on your group ride with its all-new tubeless carbon rim and updated, 11 and 12-speed compatible hub. Summiting climbs, carving descents, or cruising the flats, the new C50 is the jack of all trades among the new Ultegra R8170 wheel line up. The tubeless, carbon rim features a 21 mm internal width that pairs nicely with wider, modern tires while the Hyperglide cassette body is compatible with 11 and 12-speed cassettes.WH-R8170 TL carbon clincher disc brake designed to meet pro road race criteriaLightweight clincher full carbon 50 mm deep rim for improved aerodynamics, increased rigidity and excellent inertia for sprinters and TT specialistsEasy to use Centre Lock rotor mount for use with disc brakesStainless steel butted (2.0-1.8-2.0) and bladed straight pull spokes for optimal balance and rigidityElbow-less spokes make for a strong yet compliant wheelHigh lateral rigidity is produced with a wide flange spacingLabyrinth double-contact sealing effectively shuts out water and dirtAlloy cone with integrated steel Borozon treated bearing races - super mirror finish reduces frictionCold forged, machined aluminium hub shell and oversized 7075 alloy axle keep the wheel weight to a minimumFor 100 x 12 mm axle700C clincher compatible
The wider C17 rim design of the Zonda ensures a more efficient shape of the tyre, improving cornering grip and safety while reducing aerodynamic drag and rolling resistance. A seemingly small increase in width offers a surprisingly different riding experience, one that is sure to leave any cyclist convinced that a wider tyre size is the way forward.The asymmetric rim profile offers superior aerodynamics without sacrificing stability, the precision milling eliminates excess material reducing weight, the Rim Dynamic Balance Technology ensures that every point of the rim is counter-balanced by an equal weight on the opposing side, providing maximum stability even at high speeds and the MoMag Technology creates a tyre bed free of spoke holes, eliminating the need for rim tape and offering structural superiority. The wheels are laced with 21 stainless steel spokes in the MEGA G3 Pattern providing reinforcement on the braking side at the front, and the cassette side at the rear; creating the perfect balance of spoke tensions on both sides of the wheel, reducing stress, increasing traversal rigidity and improving the transmission of power to the wheel. Asymmetric rim profilePrecision millingRim dynamic balanceMoMag technology21 Spokes in stainless steel with Mega-G3 systemShimano / SRAM Freehub Aluminium oversize flangeCup & cone bearingsQuick release or 12mm bolt through axle Weight: 1675g
Favero Assioma DUO-Shi Power MeterThis high-quality power meter is engineered for accuracy and consistency, whether you're training for an event or trying to beat your personal performance goals. It features an aerospace aluminium alloy construction, which makes it tough and dependable as you tackle every mile of road. Favero has also ensured that each power sensor is protected by a bi-component resin block that's extremely resistant to shocks and completely waterproof. Another highlight is it's simple to install and move from one bike to another just like your normal pedals. You can do it easily and without extra tools or the need for a mechanic.Dual-Sided Power MeasurementSpecifically designed for use with Shimano pedal bodies, this model is compatible with Shimano PD-R8000, PD-R7000, PD-6800, PD-R550 and PD-R540. It features power sensors for your right and left pedal to offer real dual-sided power data by measuring power individually for both legs. This makes it possible to observe with accuracy not only Total Power, but also L/R Balance, Torque Effectiveness (TE), Pedal Smoothness (PS), etc. Assioma also guarantees accurate and consistent data in all conditions on the road, and at any temperature ranging from -10°C and 60°C, thanks also to the Automatic Temperature Compensation (ATC).Unlike others, the measurement of Assioma is not affected by errors related to very irregular pedalling (e.g. uphill sprints) or the use of oval chainrings. This is because Assioma can detect the actual instantaneous angular velocity during the whole pedal stroke, thus providing ±1% accuracy in any conditions. Not only in the lab.Bluetooth and ANT+ ConnectivityAssioma communicates with bike computers and smartphones (both Android and iOS) via Bluetooth and ANT+. Assioma is the only pedal-based power meter for road with integrated rechargeable batteries; a single charge ensures at least 50 hours of use.Please note: Compatible Shimano pedal bodies are sold separately. (Shimano PD-R8000, PD-R7000, PD-6800, PD-R550 and PD-R540).Features: Material: Aerospace Aluminium Alloy Use: Road Power Meter Type: Power sensors for right and left Shimano pedal bodies Power Measurement: Dual-sided power measurement Compatible Pedal Bodies: Shimano PD-R8000, PD-R7000, PD-6800, PD-R550 and PD-R540 Cadence Sensor: Included, inbuilt Gyroscope: Included, inbuilt Power Calculation System: Power calculation system IAV Cycling Dynamics: Yes Oval-Chainring Compatible: Yes Battery Type: Rechargeable lithium battery Battery Life: At least 50 hours Radio Communication: Bluetooth v4.0, ANT+ PWR profile (CT + PO) Accuracy Power Measurement: ± 1% Temperature Compensation: -10°C / +60°C Waterproofness Rating: IP67 Q-factor With: PD-R7000/R550/R540: +64 mm; PD-R8000/6800: +65 mm Manufacturer's Warranty: 2 years Pedal Bodies Included: No, sold separately Single or Pair: Pair Made in Italy Weight of Assioma DUO-Shi without Pedal Bodies: 99g per side (battery included) Weight of Assioma DUO-Shi with PD-R8000 Pedal Body: 157g per side (battery included)In The Box: Left power sensor with adapter for Shimano pedal bodies. Right power sensor with adapter for Shimano pedal bodies. Battery charger including plugs (EU, US, UK, AU). 2 two-meter long micro-USB/USB cables with 2 magnetic connectors. Hex key and 4 washers for the installation. Assioma user manual. Assioma DUO-Shi user manual.Technologies: Designed for the compatibility with Shimano road: Assioma DUO-Shi has been designed for Shimano road users, as it offers the opportunity to keep on riding with your current Shimano pedal bodies* without giving up on the trustability and precision of Assioma. Installation into your own Shimano pedal bodies: Installing Assioma DUO-Shi into your own compatible Shimano pedal bodies* is simple and quick. Compatible Shimano pedal bodies: Assioma DUO-Shi is compatible with the following Shimano pedal bodies: PD-R8000, PD-R7000, PD-6800, PD-R550 and PD-R540. Increased Q-factor?: The Q-factor of Assioma Look version is of +54mm, whereas that of Assioma DUO-Shi measures +64mm with the PD-R7000/R550/R540 pedal bodies and +65mm with the PD-R8000/6800. Despite an initial concern related to the increase of the q-factor, we decided to proceed with the project considering that body size (height, pelvis width, etc.) is a subjective factor contributing to determining which is the best q-factor for each one of us. A final, positive feedback from our beta testers has eventually validated the product. Easy to install: Install and move your Assioma from one bike to another just like your normal pedals. You can do it easily and without extra tools or the need for a mechanic. IAV Cycling Dynamics: Assioma provides advanced metrics called IAV Cycling Dynamics: IAV Power Phase and IAV Rider Position. These metrics, combined with the classic power data permit you to analyze in detail your pedaling technique and how your position on the bike influences performance. IAV Power and gyroscope: Unlike others, the measurement of Assioma is not affected by errors related to very irregular pedaling (e.g. uphill sprints) or the use of oval chainrings. This is because Assioma can detect the actual instantaneous angular velocity during the whole pedal stroke, thus providing ±1% accuracy in any conditions. Not only in the lab. Bluetooth and ANT+: Assioma communicates with bike computers and smartphones (both Android and iOS) via Bluetooth and ANT+. Real dual-sided power data: Assioma DUO-Shi measures power individually on both legs; this makes possible to observe with accuracy not only Total Power, but also L/R Balance, Torque Effectiveness (TE), Pedal Smoothness (PS), etc. Accuracy and consistency: Assioma guarantees accurate and consistent data in all conditions on the road, and at any temperature ranging from -10°C and 60°C, thanks also to the ATC (Automatic Temperature Compensation). Waterproof and resistant: The power sensors are protected by a bi-component resin block, extremely resistant to shocks and completely waterproof. Rechargeable and green: Assioma is the only pedal-based power meter for road with integrated rechargeable batteries; a single charge ensures at least 50 hours of use. Tested and guaranteed: Favero Electronics produces every power meter in-house and tests each of them thoroughly to fully satisfy the standard required by current regulations.Manufacturer's Part Number: 772-02-S Black/Grey Dual Side Sensor ShimanoBuy Favero Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano Dura-Ace R9150 Di2 11sp Rear DerailleurCombining the very best of Shimano’s electronic shifting technologies with its race-proven mountain bike “Shadow” cage design, the Dura-Ace R9150 Di2 road bike rear derailleur shifts in an instant and has enhanced aerodynamics. The updated cage position means it rests directly under your frame’s chainstay, reducing drag and protecting it in the event of an unfortunate racing incident.The Shadow design also offers faster wheel changes thanks to the fact that it moves the derailleur out of the way of the dropouts. It also offers faster and more precise shifting than ever before. Shimano's 9150 groupset brings its Syncro-Shift technology to the road too. Syncro-Shift technology enables the front derailleur to read the position of the rear derailleur. The front shift is then automatically operated to position the gears in the most efficient gear and best chain line. This means you'll never have to worry about front shifting and correction shifts again.Features: Speed: 11-Speed Compatibility: Shimano Di2 road shifters (Dura-Ace and Ultegra with E-tube connection) Maximum Low Gear Sprocket: 30T (Minimum 25T) Minimum High Gear Sprocket: 11T (Maximum: 14T) Maximum Front Difference: 16T Total Capacity: 33T Mount Type: Standard hanger mount Clutch Type: No Ergonomic shifting operation without stress Shimano synchronised shift Low profile rear derailleur design Shimano Shadow cage design Race endurance for less damage in a crash Maintains compact and smooth appearance Manufacturer's Part Number: RD-R9150 Weight: 204gA 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The Shadow design of the Shimano Dura-Ace Di2 rear derailleur means it sits under the chainstay and cassette to give a slimmer profile, which not only improves aerodynamics but offers faster wheel changes and helps to prevent damage in a crash. It also offers faster and more precise shifting than ever before. Shimano's 9150 groupset brings its Syncro-Shift technology to the road too. Syncro-Shift technology enables the Di2 front derailleur to read the position of your Shimano Dura-Ace R9150 rear derailleur and will automatically operate the front shift to position the gears in the most efficient gear and best chain line, so you'll never have to worry about front shifting and correction shifts again.
The Arch MK4 is the wheelset a lot of us here at Stan s choose to ride. All-mountain, Downcountry, Trailduro whatever they re calling it this week, when you like pushing your limits on climbs, descents, and every kind of trail, this is your wheelset.Versatile 28mm internal rim width optimized for 2.2-2.5 tyresLight and durable 6069 aluminium with welded joint and reinforced spoke bedBST-Asymmetric design combines Stan s legendary easy tubeless inflation with a stronger, more balanced wheel buildNew high-end premium hub - M-pulse ultra-low drag magnetic pawl adjustable hubs with 1.66° engagementMatched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceabilityConnection program includes 5-year hub warranty, 3-year rim warranty, 1-year crash replacement, and $10 donation to trail maintenance or advocacy group of your choiceThe Arch MK4 s 28mm internal width and patented lightweight, low-profile design is not afraid to climb, while being an absolute monster on the descents. With a welded seam, reinforced spoke bed, and durable 6069 aluminium construction, the Arch MK4 rims give you the confidence to ride everything. When it comes to a consistent and reliable airtight tubeless seal, nothing beats Stan s patented Bead Socket Technology. The Arch MK4 rims feature an asymmetric design with offset spoke holes to improve spoke angle and create a stronger all-around wheel. Unlike most asymmetric rims that suffer from difficult inflation and poor tubeless performance, Stan s BST-Asymmetric design delivers all the advantages of a stronger wheel, with no compromises in tubeless performance. Nobody likes downtime, so the Arch MK4 wheelset is built with traditional J-bend spokes based on their proven strength, ride quality, and easy serviceability. Stan s has always made it easy to find replacement spokes should you ever damage your wheel, and now we ve made it even easier. MK4 front and rear wheels of the same diameter all use the exact same very common spoke length, both sides, front and rear. Serviceability doesn t get any easier than that.Available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt or Centerlock brake style, with options to fit all popular axle configurations. Tubeless ready with rim tape installed.The Arch MK4 is our most versatile wheelset, and the best aluminium wheelset available for riders who want to push limits on every trail. Up, down, and wherever the ride takes you, the Arch MK4 wheelset has it under control.What s included: Arch MK4 wheels include pre-installed tape for tubeless use and presta valves. For full specification please go to the specification tab.
The Arch MK4 is the wheelset a lot of us here at Stan s choose to ride. All-mountain, Downcountry, Trailduro whatever they re calling it this week, when you like pushing your limits on climbs, descents, and every kind of trail, this is your wheelset.Versatile 28mm internal rim width optimized for 2.2-2.5 tyresLight and durable 6069 aluminium with welded joint and reinforced spoke bedBST-Asymmetric design combines Stan s legendary easy tubeless inflation with a stronger, more balanced wheel buildNew high-end premium hub - M-pulse ultra-low drag magnetic pawl adjustable hubs with 1.66° engagementMatched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceabilityConnection program includes 5-year hub warranty, 3-year rim warranty, 1-year crash replacement, and $10 donation to trail maintenance or advocacy group of your choiceThe Arch MK4 s 28mm internal width and patented lightweight, low-profile design is not afraid to climb, while being an absolute monster on the descents. With a welded seam, reinforced spoke bed, and durable 6069 aluminium construction, the Arch MK4 rims give you the confidence to ride everything. When it comes to a consistent and reliable airtight tubeless seal, nothing beats Stan s patented Bead Socket Technology. The Arch MK4 rims feature an asymmetric design with offset spoke holes to improve spoke angle and create a stronger all-around wheel. Unlike most asymmetric rims that suffer from difficult inflation and poor tubeless performance, Stan s BST-Asymmetric design delivers all the advantages of a stronger wheel, with no compromises in tubeless performance. Nobody likes downtime, so the Arch MK4 wheelset is built with traditional J-bend spokes based on their proven strength, ride quality, and easy serviceability. Stan s has always made it easy to find replacement spokes should you ever damage your wheel, and now we ve made it even easier. MK4 front and rear wheels of the same diameter all use the exact same very common spoke length, both sides, front and rear. Serviceability doesn t get any easier than that.Available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt or Centerlock brake style, with options to fit all popular axle configurations. Tubeless ready with rim tape installed.The Arch MK4 is our most versatile wheelset, and the best aluminium wheelset available for riders who want to push limits on every trail. Up, down, and wherever the ride takes you, the Arch MK4 wheelset has it under control.What s included: Arch MK4 wheels include pre-installed tape for tubeless use and presta valves. For full specification please go to the specification tab.
The Arch MK4 is the wheelset a lot of us here at Stan s choose to ride. All-mountain, Downcountry, Trailduro whatever they re calling it this week, when you like pushing your limits on climbs, descents, and every kind of trail, this is your wheelset.Versatile 28mm internal rim width optimized for 2.2-2.5 tyresLight and durable 6069 aluminium with welded joint and reinforced spoke bedBST-Asymmetric design combines Stan s legendary easy tubeless inflation with a stronger, more balanced wheel buildNew high-end premium hub - M-pulse ultra-low drag magnetic pawl adjustable hubs with 1.66° engagementMatched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceabilityConnection program includes 5-year hub warranty, 3-year rim warranty, 1-year crash replacement, and $10 donation to trail maintenance or advocacy group of your choiceThe Arch MK4 s 28mm internal width and patented lightweight, low-profile design is not afraid to climb, while being an absolute monster on the descents. With a welded seam, reinforced spoke bed, and durable 6069 aluminium construction, the Arch MK4 rims give you the confidence to ride everything. When it comes to a consistent and reliable airtight tubeless seal, nothing beats Stan s patented Bead Socket Technology. The Arch MK4 rims feature an asymmetric design with offset spoke holes to improve spoke angle and create a stronger all-around wheel. Unlike most asymmetric rims that suffer from difficult inflation and poor tubeless performance, Stan s BST-Asymmetric design delivers all the advantages of a stronger wheel, with no compromises in tubeless performance. Nobody likes downtime, so the Arch MK4 wheelset is built with traditional J-bend spokes based on their proven strength, ride quality, and easy serviceability. Stan s has always made it easy to find replacement spokes should you ever damage your wheel, and now we ve made it even easier. MK4 front and rear wheels of the same diameter all use the exact same very common spoke length, both sides, front and rear. Serviceability doesn t get any easier than that.Available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt or Centerlock brake style, with options to fit all popular axle configurations. Tubeless ready with rim tape installed.The Arch MK4 is our most versatile wheelset, and the best aluminium wheelset available for riders who want to push limits on every trail. Up, down, and wherever the ride takes you, the Arch MK4 wheelset has it under control.What s included: Arch MK4 wheels include pre-installed tape for tubeless use and presta valves. For full specification please go to the specification tab.
The Arch MK4 is the wheelset a lot of us here at Stan s choose to ride. All-mountain, Downcountry, Trailduro whatever they re calling it this week, when you like pushing your limits on climbs, descents, and every kind of trail, this is your wheelset.Versatile 28mm internal rim width optimized for 2.2-2.5 tyresLight and durable 6069 aluminium with welded joint and reinforced spoke bedBST-Asymmetric design combines Stan s legendary easy tubeless inflation with a stronger, more balanced wheel buildNew high-end premium hub - M-pulse ultra-low drag magnetic pawl adjustable hubs with 1.66° engagementMatched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceabilityConnection program includes 5-year hub warranty, 3-year rim warranty, 1-year crash replacement, and $10 donation to trail maintenance or advocacy group of your choiceThe Arch MK4 s 28mm internal width and patented lightweight, low-profile design is not afraid to climb, while being an absolute monster on the descents. With a welded seam, reinforced spoke bed, and durable 6069 aluminium construction, the Arch MK4 rims give you the confidence to ride everything. When it comes to a consistent and reliable airtight tubeless seal, nothing beats Stan s patented Bead Socket Technology. The Arch MK4 rims feature an asymmetric design with offset spoke holes to improve spoke angle and create a stronger all-around wheel. Unlike most asymmetric rims that suffer from difficult inflation and poor tubeless performance, Stan s BST-Asymmetric design delivers all the advantages of a stronger wheel, with no compromises in tubeless performance. Nobody likes downtime, so the Arch MK4 wheelset is built with traditional J-bend spokes based on their proven strength, ride quality, and easy serviceability. Stan s has always made it easy to find replacement spokes should you ever damage your wheel, and now we ve made it even easier. MK4 front and rear wheels of the same diameter all use the exact same very common spoke length, both sides, front and rear. Serviceability doesn t get any easier than that.Available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt or Centerlock brake style, with options to fit all popular axle configurations. Tubeless ready with rim tape installed.The Arch MK4 is our most versatile wheelset, and the best aluminium wheelset available for riders who want to push limits on every trail. Up, down, and wherever the ride takes you, the Arch MK4 wheelset has it under control.What s included: Arch MK4 wheels include pre-installed tape for tubeless use and presta valves. For full specification please go to the specification tab.
The Arch MK4 is the wheelset a lot of us here at Stan s choose to ride. All-mountain, Downcountry, Trailduro whatever they re calling it this week, when you like pushing your limits on climbs, descents, and every kind of trail, this is your wheelset.Versatile 28mm internal rim width optimized for 2.2-2.5 tyresLight and durable 6069 aluminium with welded joint and reinforced spoke bedBST-Asymmetric design combines Stan s legendary easy tubeless inflation with a stronger, more balanced wheel buildNew high-end premium hub - M-pulse ultra-low drag magnetic pawl adjustable hubs with 1.66° engagementMatched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceabilityConnection program includes 5-year hub warranty, 3-year rim warranty, 1-year crash replacement, and $10 donation to trail maintenance or advocacy group of your choiceThe Arch MK4 s 28mm internal width and patented lightweight, low-profile design is not afraid to climb, while being an absolute monster on the descents. With a welded seam, reinforced spoke bed, and durable 6069 aluminium construction, the Arch MK4 rims give you the confidence to ride everything. When it comes to a consistent and reliable airtight tubeless seal, nothing beats Stan s patented Bead Socket Technology. The Arch MK4 rims feature an asymmetric design with offset spoke holes to improve spoke angle and create a stronger all-around wheel. Unlike most asymmetric rims that suffer from difficult inflation and poor tubeless performance, Stan s BST-Asymmetric design delivers all the advantages of a stronger wheel, with no compromises in tubeless performance. Nobody likes downtime, so the Arch MK4 wheelset is built with traditional J-bend spokes based on their proven strength, ride quality, and easy serviceability. Stan s has always made it easy to find replacement spokes should you ever damage your wheel, and now we ve made it even easier. MK4 front and rear wheels of the same diameter all use the exact same very common spoke length, both sides, front and rear. Serviceability doesn t get any easier than that.Available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt or Centerlock brake style, with options to fit all popular axle configurations. Tubeless ready with rim tape installed.The Arch MK4 is our most versatile wheelset, and the best aluminium wheelset available for riders who want to push limits on every trail. Up, down, and wherever the ride takes you, the Arch MK4 wheelset has it under control.What s included: Arch MK4 wheels include pre-installed tape for tubeless use and presta valves. For full specification please go to the specification tab.
The Arch MK4 is the wheelset a lot of us here at Stan s choose to ride. All-mountain, Downcountry, Trailduro whatever they re calling it this week, when you like pushing your limits on climbs, descents, and every kind of trail, this is your wheelset.Versatile 28mm internal rim width optimized for 2.2-2.5 tyresLight and durable 6069 aluminium with welded joint and reinforced spoke bedBST-Asymmetric design combines Stan s legendary easy tubeless inflation with a stronger, more balanced wheel buildNew high-end premium hub - M-pulse ultra-low drag magnetic pawl adjustable hubs with 1.66° engagementMatched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceabilityConnection program includes 5-year hub warranty, 3-year rim warranty, 1-year crash replacement, and $10 donation to trail maintenance or advocacy group of your choiceThe Arch MK4 s 28mm internal width and patented lightweight, low-profile design is not afraid to climb, while being an absolute monster on the descents. With a welded seam, reinforced spoke bed, and durable 6069 aluminium construction, the Arch MK4 rims give you the confidence to ride everything. When it comes to a consistent and reliable airtight tubeless seal, nothing beats Stan s patented Bead Socket Technology. The Arch MK4 rims feature an asymmetric design with offset spoke holes to improve spoke angle and create a stronger all-around wheel. Unlike most asymmetric rims that suffer from difficult inflation and poor tubeless performance, Stan s BST-Asymmetric design delivers all the advantages of a stronger wheel, with no compromises in tubeless performance. Nobody likes downtime, so the Arch MK4 wheelset is built with traditional J-bend spokes based on their proven strength, ride quality, and easy serviceability. Stan s has always made it easy to find replacement spokes should you ever damage your wheel, and now we ve made it even easier. MK4 front and rear wheels of the same diameter all use the exact same very common spoke length, both sides, front and rear. Serviceability doesn t get any easier than that.Available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt or Centerlock brake style, with options to fit all popular axle configurations. Tubeless ready with rim tape installed.The Arch MK4 is our most versatile wheelset, and the best aluminium wheelset available for riders who want to push limits on every trail. Up, down, and wherever the ride takes you, the Arch MK4 wheelset has it under control.What s included: Arch MK4 wheels include pre-installed tape for tubeless use and presta valves. For full specification please go to the specification tab.