As a 29-inch wheel specifically developed for all-mountain riding, the AM-MW28X36-29-CS-UL's core advantage lies in its "deep synergy between terrain adaptability and performance." The rims feature a hookless straight-edge design, eliminating the risk of debonding associated with traditional hooked rims under wide tires and high pressure. The 30mm internal width allows for full tire expansion, improving contact patch and grip. The short 28mm rim depth is reinforced with a "multi-directional carbon fiber layup"—four layers of carbon fiber on the sides of the frame protect against lateral impact, while three layers on the bottom enhance vertical load-bearing capacity. In a rock impact test with a 1.2-meter drop, the rim deformation was ≤0.1mm, far exceeding the industry standard for all-mountain wheels.
Equipped with KOIBIKE MH-CS320T-Boost aluminum alloy straight-pull hubs, the 24/24 hole straight-pull layout and CS-T32 carbon fiber spokes (2g each) create a lightweight yet rigid combination. Each spoke boasts a tensile strength of 125 kgf, increasing the wheelset's overall torsional rigidity by 25% compared to steel-spoke wheels. The hubs support Shimano HG/MS and SRAM XD freehubs, and the center lock design maintains concentricity with the disc brake rotors to ≤0.02mm, preventing uneven brake wear on long descents. External aluminum alloy spoke nipples (0.3g each) further control weight and simplify maintenance. The overall configuration balances the demands of aggressive all-mountain riding with the lightweight requirements of everyday training.
Straight-sided rim + wide tire compatibility, maximized grip on complex terrain
With a 36mm external width and 30mm internal width, the straight-sided rim increases its contact patch by 15% compared to narrower rims on complex terrain like mud and gravel, significantly enhancing grip. The straight-sided design avoids the "hook stress concentration" problem of traditional hook-type rims, reducing the risk of tire debonding by 90% when used at low tire pressures. It's ideal for the frequent cornering and leaping maneuvers of all-mountain riding.
2g Carbon Spokes + Boost Hubs: A Double Breakthrough in Lightness and Stiffness
CS-T32 carbon fiber spokes weigh only 2g each, 55% less than comparable steel spokes (4.5g). A total of 24 spokes adds only 48g. Combined with the 330±5g MH-CS320T-Boost hub, the total weight is an ultra-light 1326±30g. This reduces the wheel's rotational inertia by 12% when climbing, reducing rider effort. The direct-pull layout evenly distributes spoke tension (120-130 kgf/s). The wheel boasts a torsional stiffness of 85 N·m/°, ensuring no noticeable rim deformation during high-speed cornering or rock-climbing, ensuring more direct handling.
Center Lock Disc Brake + Multi-Drive Freehub Compatibility: Perfect Braking and Adaptability
The center lock hub design eliminates the need to align six bolts when installing the disc brake rotor, allowing installation in just 5 minutes. Concentricity tolerance is minimal, ensuring zero rotor runout during braking. Braking force fade is ≤5% after continuous braking on a long downhill descent (35 km/h for 2 minutes), eliminating the risk of brake failure during all-mountain riding. The hub supports quick-change Shimano HG/MS and SRAM XD freehubs, allowing for adaption to different gear systems without changing wheels, meeting riders' needs for "one frame, multiple systems." Short, high-profile rims offer impact resistance and maximized durability for all-mountain riding.
The 28mm short rim depth is reinforced with a "cross-ply process," where the carbon fiber layers on the sides of the rim are arranged at a 45-degree angle, improving lateral impact resistance by 40% compared to taller rims. The rim surface features a "ceramic composite coating" with a hardness of HRC58, resulting in stone scratches ≤0.01mm deep, ensuring long-term use on muddy and rocky trails without noticeable wear. The 330±5g aluminum alloy hub features a "reinforced flange" design with an increased flange thickness of 8mm to prevent flange breakage during all-mountain riding.
Lightweight Details + Easy Maintenance, Low Long-Term Cost
The external aluminum alloy spoke nipples weigh only 0.3g each, 40% lighter than stainless steel nipples. Their anodized surface withstands a 72-hour salt spray test, ensuring rust-free use in rainy conditions. The glue-free mechanical locking mechanism (spokes and nipples) prevents loosening due to aging glue. Maintenance requires only fine-tuning the tension with a spoke wrench, eliminating the need for specialized tools. This reduces maintenance costs by 30% compared to traditional carbon spoke wheels.
Application areas for the AM-MW28X36-29-CS-UL carbon spoke wheel:
All-Mountain Trail (AM)
The 29-inch wheel diameter and 28mm rim depth combine for both maneuverability and agility. The 2.4-2.8-inch tire width is suitable for all-mountain terrain, including mud, rock, and steep slopes. The 30mm internal width, straight-sided rim improves grip, and the lightweight 2g carbon spokes make climbing easier. This makes it suitable for professional riders tackling all-mountain routes that combine "uphill, downhill, and leaping," such as technical trails in mountain parks and off-road trails in natural terrain.
Enduro Training
The wheel's high impact resistance and braking stability meet the "long-distance, high-intensity" demands of Enduro racing. The 28mm rim depth protects against the impact of continuous descents, the center-lock disc brakes prevent brake fade, and the lightweight weight of 1326±30g reduces fatigue during long rides. It's ideal for daily race-simulation training, such as a 50km mixed mountain course.
Advanced Leisure Mountain Bike Riding
For advanced riders seeking performance, this wheelset meets the lightweight demands of weekend mountain biking while also tackling light off-roading (such as gravel roads and gentle slopes). The 36mm external width accommodates wide tires for enhanced riding comfort, reducing vibration on bumpy roads. The Boost-spec thru-axles are compatible with most mainstream mountain bike frames, allowing for installation without frame modification.
Mountain Bike Wheel Upgrade
If your existing wheelset is experiencing issues like weight, poor stiffness, or insufficient grip, this wheelset is a perfect upgrade. The straight-sided rims accommodate existing tubeless tires, the multiple freehubs are compatible with existing gearshift systems, and the lightweight and high stiffness of the 2g carbon spokes significantly improve the performance of older frames. This makes it ideal for upgrading an entry-level mountain bike to a lightweight off-road model.
D: Disc Brake
W: Wheel
28: Depth/Height
36: Outer Width
HL: Hookless
CS: Carbon Spoke
UL: Ultra-light
Model | Intended Use | Brake System | Inner Width | Outer Width | Depth | Weight Pair | Configurations | Max. Rider Weight Limit | Suggested Tire Pressure | Suggested Tire Size |
AM-MW28X36-29-CS-UL | Road/Cyclocross | Disc Brake | 30mm | 36mm | 28mm | 1326±30g | *Hubs: KOIBIKE MH-CS320T-Boost Alloy Straight Pull Hubs, Center Lock, Ratchet System, 36T, Weight 330±5g/Pair. 24/24 Holes, 15x100 & 12x 148mm Thru Axle, Cassette Body: Shimano HG/MSR/N3W/XDR Colour: Black *Spokes: CS-T32, Carbon Spokes, Straight Pull, Black, Weight 2 grams/pcs *Nipples: External Alloy Nipples, Weight 0.3 grams/pcs | No | 30-60 PSI | 2.4-2.8 inch |
The above parameters are for reference only, please consult our engineers for specific technical parameters.
100% Customizable
Customized Fiber Appearance:
Quality Control
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We have been in carbon bicycle production industry since the year of 2015, so 10 years history and experiences.
100 workers, 30 management, 20 Engineers, 10 Sales.
Carbon bicycle rims, carbon spokes, carbon wheels, cranks and other carbon bicycle components.
Our factory area is 2500 square meters, with 2 production lines, one wheel building line.
10.000 pcs/month for carbon rims, 100.000 pcs/month for carbon spokes, 10.000 pcs/month for other carbon bicycle components like cranks, handlebars, thru axles etc.
10-15 days for carbon rims(100-200 pcs), 7-10 days for carbon spokes, 25-30 days for carbon wheels.
It depend on the product models, quantities and and other factors, takes carbon rim for example, price generate from 80-130 USD per piece.
2 years for carbo rims and wheels, 1 year for carbon spokes.
We focus on OEM/ODM service for customers mainly on Europe and American markets.
We have signed confidential agreement with our big OEM customers, so not allow to tell, but the big brands from Europe and America.
Our factory locates in Xiamen, China.
