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Description
In Stock Items
All items listed as “In Stock” on our website are kept either on site or in our remote warehouses. Items on site are ready to be shipped out as soon as you place your order, ensuring a speedy delivery so you can enjoy your purchase without any delay.
Remote Warehouse Bikes
For bikes stored in our remote warehouses, please allow 1-2 days for preparation before they are shipped. Delivery will then take an additional 2-3 days, depending on your location. We will advise on the exact delivery times once your order is received and the warehouse is confirmed.
Out of Stock or Special Requests
If the product or size you’re looking for isn’t listed as “In Stock,” don’t worry! Our suppliers carry a wide range of products, and we’re confident we can help you find exactly what you need. Please email us at info@spokerite.co.za with the details of the product you’re interested in, and we’ll do our best to assist you.
EXAR Carbon Fiber Wheelset Pro Series 2025 – Rim Brake 45
Instead of being a combination of components and sub-assemblies, EXAR carbon fiber wheelsets Pro series are quality and high-performing products featuring an integral design of appearance, weight, and performance.
Integral Design, No Sub-Assemblies
Instead of being a combination of components and sub-assemblies, EXAR carbon fiber wheelsets are quality and high-performing products featuring an integral design of appearance, weight, and performance.
Lighter
EXAR Pro series rims are made of HI-MOD carbon fiber. While keeping the rim, spoke and hub stiff, we optimized materials and structure to reduce overall weight. The light design effectively reduces driving weight and improves sprinting performance.
Automatic carbon fiber winding technology is applied, therefore, the carbon fiber is prestressed and is more straight and evenly forced. The stiffness and consistency of wheelset are ensured.
*The wheelset weight does not include the weight of quick-release bar and rim tape; A tolerance of ±3% applies to the weight, and the actual wheelset weight should prevail.
Flat Engagement Ratchet, Ensure Stable Performance
Adopt 36-tooth flat ratchet, which has tighter engagement with larger surface. This can make the ratchet more durable, with fast and precise engagement as well as stability. The rotating sound is more even with flat wire spring.
It’s highly free that you could replace the original ratchet with other ratchet of different tooth amount.
Wider for Better Aerodynamics
Pro series wheelsets have an external width of 27mm and an internal width of 20mm.
The rear wheel of the rim brake model is designed with an external width of 26mm and an internal width of 19.5mm for better compatibility with the caliper brake.
The 27mm wide rim provides a flatter aerodynamic surface with 25c and 28c outer tires and thus reducing air resistance.
Braking Rim Dewatering Line Design
The unique grooved dewatering line of the rim brake wheelsets quickly drains water and improves braking performance. The braking rim is made of resin that be resistant to high temperature up to 240, eliminating the concern of rim blowing up or melting.
Uncompromising Stiffness
EXAR Pro series wheelsets have passed UCI impact tests. After applying an energy of 40 J on the bare carbon rim, the deviation complies with UCI standard.
Unique Design of Rim
- To improve the wheelset stability, stiffness and crosswind resistance of different frame heights, targeted wheel rim designs were made.
- For the 45mm deep rim brake rear wheel, an asymmetric rim design is adopted to balance the rear wheel spoken tension.
- For the 58mm deep rim brake rear wheel, a symmetric structure is adopted to prevent deflection due to uneven airflow.
- For disc brake wheels, symmetric structure is adopted and the flange width is optimized so that the spoke tension on both sides are close to the same.
- The cross-sections of Pro series wheelsets are redesigned for greater stability and rigidity.
Elaborate Hub StructureThe rear-wheel hub WR size is increased to ensure the spoke tension on the driving side is consistent with that on the non-driving side, hence to deliver outstanding lateral stiffness.
Adopting FEA technology and conducting several tests to identify the maximum force on the hub, to get a light and sturdy hub.
To obtain a better balance lateral stiffness, driving stiffness and braking effect, the front and rear spokes of the disc brake variants have applied a 2:1 balanced lacing pattern, and the hub geometry has been adjusted accordingly.
The rear-wheel drive side flange diameter is increased and the spoke direction is aligned with the torque direction and the wheelset driving efficiency is improved.
Balanced Design of Spoke TensionFor the rear wheel of the rim brake variant, and both front and rear wheels of the the disc brake variant, the 2:1 balanced lacing pattern is applied to reasonably distribute spoke tension and enhance the pedaling force.
With a standard design of highly stiff spokes, the spoke tension of all models of rear-wheel drive side is 120kgf ±10%, with vigorous and powerful treading.
More Powerful Design
- The Pro series feature Pillar Wing21 flat spokes for excellent performance of aerodynamics and driving stiffness.
- The Pro series with a rim brake come with carbon fiber composite brake blocks, providing excellent braking effect and less debris.
- The self-locking spoke nipple for both internal and external use is applied, where the nipple is tighter and the spokes are not easy to loose.
- Support tubeless tires and clincher tires. Tubeless rim tape has been attached at the factory so that tubeless tires can be installed directly.
| SPECIFICATIONS: | |
| Brake type | Rim Brake：RB45 Pro |
|---|---|
| Frame Height | RB45 Pro：45mm |
| Weight | RB45 Pro：1350g |
| External width | The front wheel of RB45 Pro and RB58 Pro is 27mm, and the rear wheel is 26mm//Both DB45 Pro and DB58 Pro are 27mm |
| Internal width | The front wheel of RB45 Pro and RB58 Pro is 20mm, and the rear wheel is 19.5mm//Both DB45 Pro and DB58 Pro are 20mm |
| Rim Material | HI-MOD carbon fiber |
| Brake | RB45 Pro and RB58 Pro are rim brakes with dewatering line design//DB45 Pro and DB58 Pro are Center lock disc brake |
| Spoke Type | pillar wing21 |
| Ratchet | 36T (Compatible with DT system. Replaceable with different tooth amount DT ratchet) |
| Front Wheel Spoke Tension | 100kgf±10% |
| Rear Wheel Spoke Tension | RB45 Pro & RB58 Pro：Drive side 120kgf±10%， Non-drive side 100kgf±10% // DB45 Pro & DB58 P0ro：Drive side 120kgf±10% Non-drive side 110kgf±10% |
| Front Wheel Spoke Lacing | RB45 Pro & RB58 Pro：Radial lacing, 16H // DB45 Pro & DB58 Pro：21H, 2:1, brake side×2, non-brake side radial lacing |
| Rear Wheel Spoke Lacing | RB45 Pro & RB58 Pro：21H, 2:1, drive side×2, non-drive side radial lacing // DB45 Pro & DB58 Pro：24H, 2:1, drive side×2, brake side×2 |
| Rim Type | RB45 Pro：Front wheel: Symmetric, Rear wheel: Asymmetric//RB58 Pro，DB45 Pro & DB58 Pro |
| Frame Spacing | RB45 Pro & RB58 Pro：100/130mm quick release // DB45 Pro & DB58 Pro：100/142mm thru-axle (100/135mm quick release available separately) |
| Freehub | Standard SHIMANO 11-speed (Campagnolo N3W and Sram XDR freehubs are available separately) |
| Frame Spacing | RB45 Pro & RB58 Pro：100/130mm quick release// DB45 Pro & DB58 Pro：100/142mm thru-axle (100/135mm quick release available separately) |
| Compatible Cassette | Shimano 8-12s, Sram 8-12s (require separate XDR freehub for 12s), Campagnolo 8-13s (require separate N3W freehub) |
| Compatible Tire Type | Clincher tire, tubeless tire |
| Compatible Tire Width | Compatible with 25c tire and above Suggested tire width is 28c-32c |
| Maximum Tire Pressure | Clincher tire: 110psi for 28c, 100psi for 30c, 90psi for 32c ,Tubeless tire: 100psi for 28c, 90psi for 30c, 80psi for 32c//Clincher tire 120psi for 25c,Tubeless tire 110psi for 25c |
Included in the Box with: RB45 Pro & RB58 Pro
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Carbon fiber front wheel*1
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Carbon fiber rear wheel*1
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Tubeless rim tape*2 (factory-installed)
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Instruction manual*1
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Special carbon fiber brake block*4
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Quick release*2
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Tubeless valve*2
General Inquiries
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