Name: EXAR Carbon Fiber Wheelset Ultra Series 2025
Brand: Exar
SKU: 191
Price: 1199 USD
Availability: InStock
Rating: 5 (1 reviews)

Overview

EXAR Carbon Fiber Wheelset Ultra Series 2025

Unleash Your Cycling Potential to Ultra

Exquisite Design, Ingenious Interaction

EXAR Ultra carbon fiber wheelset applies HI-MOD carbon fiber, following the integral and systematic design. The primal materials allow great reduction on weight while retaining outstanding stiffness. This helps you get a smooth start and easier acceleration. *The wheelset weight in the table does not include the weight of quick-release skewer and rim tape; A tolerance of ±3% applies to the weight, and the actual wheelset weight should prevail.

Lower Front And Higher Rear Wheel

Combine High Inertia And Stability
The wheelset combines lower front wheel and higher rear wheel. While the rear wheel maintains high inertia, the front wheel still has excellent controllability. This avails you to ride efficiently and stably.

DB405 Ultra Optimal choice for climbing
DB508 Ultra Balanced choice for both climbing and cruising
DB607 Ultra Optimal choice for cruising

Full Carbon Fiber Spokes with Scientific Lacing

Contribute Ultra-Stiffness

EXAR Ultra carbon fiber wheelset adopts HI-MOD carbon fiber spokes from VONOA. Each spoke weighs only 2.8g and has better stiffness. Compared with top steel spokes, Ultra’s spoke is 30% lighter and can withstand 30% more tensile force. Lower strength loss of transmission brings higher driving efficiency.

Featuring latest patent, we hide the metal accessories on spokes, while making it wider and thinner. Thus, you can get lower wind resistance with smooth and simplified design.

The wheelset applies 2:1 balanced lacing pattern, which distributes tension perfectly.

Flat Engagement Ratchet

Ensure Stable Performance

The EXAR Pro series features a 36-tooth flat ratchet system, which has greater engagement force with larger surface. This design enhanced durability of ratchet, ensuring fast and precise engagement with improved stability. The rotating sound is smoother and more consistent with use of flat wire spring. Additionally, the ratchet system allows for easy replacement with other ratchets of varying tooth counts, offering increased versatility and customization.

30/32mm Wide Fat Rim

Aerodynamic And Comfortable

The external rim width of DB405 and DB508 is 30mm, that of DB607 is 32mm for front wheel and 30mm for rear wheel.

The internal width of all are 23mm. It ensures optimal aerodynamic performance in complex wind conditions, improving stability in crosswinds as well.

After installing the 28-32c tire, the contact surface between tire and rim is flat. As a result, It creates a flatter aerodynamic surface and enhances cycling comfort.

*The wheelset rim width is measure at the widest part of the wheel.

Elaborate Hub Design

Details Reveal Optimal Configuration

Improve flange diameter

The flange diameter has been calculated scientifically in terms of the stiffness of carbon fiber spokes. We reduce the amount of stress concentration point where spoke contacts with hub, thus improving driving stiffness and extending endurance.

Smooth edging on bearing surface

The contact surface of bearing and body is processed with smooth edges to create precise synergy.

Scientific WR size

The WR size of the rear hub is 18.2mm. This ensures spoke tension of drive side and non-drive side to be similar, achieving excellent lateral stiffness.

Ceramic Bearings, Smooth And Durable

Compared to steel, ceramic is light-weight with low resistance, which can be used to make smoother bearings. A well-made ceramic bearing has lower resistance, thus saving you energy and allowing rapid acceleration.

More Powerful Designs

EXAR Ultra wheelsets have passed UCI impact tests. After applying an energy of 40 J on the bare carbon rim, the deviation complies with UCI standard.

The wheelset is compatible with tubeless tire and clincher tire. It comes with tubeless rim tape and rim plugs. While installing clincher tire, you could use rim plugs to reduce weight.

The dynamic balance is exclusively designed for TPU inner tube. You will enjoy a stable cycling at high speed.

Spec

Specifications
Model	DB405、DB405、DB607
Brake	Disc brake
Height	DB405:Front wheel 40mm,Rear wheel 45mm//DB508:Front wheel 50mm,Rear wheel 58mm//DB607:Front wheel 60mm,Rear wheel 67mm
Weight	DB405:1280g//DB508:1350g//DB607：1460g（*The wheelset weight does not include the weight of quick-release skewer and rim tape; A tolerance of ±3% applies to the weight, and the actual wheelset weight should prevail.）
External Rim Width	DB405:30mm//DB508：30mm//DB607:Front wheel 32mm, rear wheel 30mm
Internal Rim Width	23 mm
Rim Material	HI-MOD carbon fiber
Spoke	HI-MOD carbon fiber
Front Wheel Spoke Tension	110kgf±10%
Rear Wheel Spoke Tension	Drive side 130kgf±10% ,Non-drive side 110kgf±10%
Front Wheel Spoke Lacing	21H 2:1, brake side×2, non-brake side radial lacing
Rear Wheel Spoke Lacing	21H, 2:1, drive side×2, brake side radial lacing
Ratchet	36T Compatible with DT system. Replaceable ratchet with different tooth amount）
Frame Spacing	100/142mm thru-axle
Freehub	Standard Shimano 11-speed (Campagnolo N3W and Sram XDR freehub are 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
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 25cTubeless tire 110psi for 25c
Compatible Tire Width	Compatible with 25c tire and above , Suggested tire width is 28c-32c
Package standard	Carbon fiber front wheel1, carbon fiber rear wheel1, tubeless rim tape2, rim plug50, tubeless tire valve2, manual1

In the box

Carbon fiber front wheel*1
Carbon fiber rear wheel*1
Tubeless rim tape*2
Rim plug*50
Tubeless tire valve*2
Manual*1

Reviews (1)

1 total ratings

Review the product Product review processing policy

Ethan J.

Powerful wheels

12/19/2024

I have a set of these wheels.I have 1.000k on them and they are fantastic. Fast, smooth and all importantly trouble free, Easy to set up as tubeless or clincher. I opted for clincher set-up and TPUs. The hubs are easy japanesy to service and maintain.

Size	XS	S	M	L
Euro	32/34	36	38	40
USA	0/2	4	6	8
Bust(in)	31-32	33	34	36
Bust(cm)	80.5-82.5	84.5	87	92
Waist(in)	24-25	26	27	29
Waist(cm)	62.5-64.5	66.5	69	74
Hips(in)	34-35	36	37	39
Hips(cm)	87.5-89.5	91.5	94	99

How To Measure Your Bust

With your arms relaxed at your sides, measure around the fullest part of your chest.

How To Measure Your Waist

Measure around the narrowest part of your natural waist, generally around the belly button. To ensure a comfortable fit, keep one finger between the measuring tape and your body.