EXAR Carbon Fiber Pro Wheelset

EXAR carbon wheelsets are not combinations of separate parts and subassemblies, but integrated, high-quality, high-performance products that form a unified system in look, weight and performance.

EXAR Pro series rims are made from HI-MOD carbon. While maintaining the stiffness of the rim, spokes and hubs, material use and structure have been optimised to reduce total weight. The lightweight design effectively reduces the bike's rotating mass and improves sprint performance.

Production uses automated carbon spoke winding technology, which pre-tensions the carbon for straighter, more even load distribution. This guarantees the wheelset's proper stiffness and trueness.

*Wheelset weight excludes the quick-release axle and rim tape. A ±3% weight deviation is possible; the actual wheelset weight always prevails.

Thanks to its larger contact surface, the 36-tooth flat ratchet provides tighter engagement. This increases ratchet durability while enabling fast, precise engagement and stable operation. Thanks to the flat wire spring, the freewheel sound is smoother.

The original ratchet can easily be replaced with a ratchet with a different tooth count, so the wheelset can be customised as needed.

Pro series wheelsets have an outer width of 27 mm and an inner width of 20 mm.

The rear wheel of the rim brake models has an outer width of 26 mm and an inner width of 19.5 mm, ensuring better compatibility with the brake caliper.

With 25C and 28C tyres, the 27 mm wide rim creates a flatter aerodynamic surface, reducing drag.

The unique grooved drainage design of the rim brake wheelsets quickly channels water away from the braking surface, improving braking performance.

The braking surface is made from high-temperature resin that is heat-resistant up to 240 °C, significantly reducing the risk of the rim overheating, deforming or melting.

UCI approved

EXAR Pro series wheelsets meet UCI impact resistance tests. After a 40 J impact on the bare carbon rim, rim deformation stays within the limit set by the UCI standard.

Unique rim shape

Targeted rim shapes optimised for different rim depths improve the wheelset's stability, stiffness and crosswind resistance.

The 45 mm deep rim brake rear wheel uses an asymmetrical rim design to balance rear wheel spoke tension.

The 58 mm deep rim brake rear wheel uses a symmetrical design that reduces lateral deflection caused by uneven airflow.

The disc brake wheels have a symmetrical design, and the flange width has been optimised so spoke tension is almost equal on both sides.

The cross-section of Pro series wheelsets has been redesigned for greater stability and stiffness.

Well-thought-out hub structure

The rear hub's WR dimension has been increased so drive-side and non-drive-side spoke tension is equal, providing excellent lateral stiffness.

FEA technology was used, and several tests were carried out to determine the maximum force acting on the hub, resulting in a light yet robust hub structure.

For the optimal balance of lateral stiffness, drive stiffness and braking, the front and rear wheels of the disc brake versions use balanced 2:1 spoke lacing, with the hub geometry designed accordingly.

The rear wheel's drive-side flange diameter has been increased and spoke direction aligned with the torque direction, improving the wheelset's drive efficiency.

Balanced spoke tension

The rear wheel of the rim brake version and the front and rear wheels of the disc brake version use balanced 2:1 spoke lacing that properly distributes spoke tension and improves the transfer of pedalling force.

Alongside the standard high-stiffness spoke design, the rear wheels' drive-side spoke tension is 120 kgf ±10% on all models, for powerful, intense pedalling.

The Pro series uses Pillar Wing21 flat spokes, which provide excellent aerodynamic performance and drive stiffness.

The rim brake Pro series comes with carbon-composite brake pads that provide excellent braking while producing less brake dust.

The system uses internal and external self-locking spoke nipples. These hold more tightly, so the spokes are less prone to loosening.

The wheelset is compatible with both tubeless and clincher tyres. The tubeless rim tape is factory fitted, so tubeless tyres can be mounted directly.