Venn 500 C UL carbon wheelset, side by side

Venn 500 C UL carbon wheelset, along the rim

Rim Profile

Venn 500 C UL Carbon Road Disc Wheelset

998 g ±30 · 50 mm deep · 25 mm int. / 32 mm ext. · carbon aero blade spokes

C Carbon spokes · Carbon aero blade spokes on hubs with ceramic bearings. The lightest, stiffest road and gravel sets.

£1,239

Free shipping to the UK · duties & VAT included

The Venn 500 C UL (Ultra Light) redefines the balance between climbing prowess and aerodynamic efficiency for the UK cyclist. Weighing an astonishing 998g, these wheels feature a 50mm depth and a modern 25mm internal width optimized for wider contemporary road tyres. Left without a clear coat, in gloss, matte or 25k filament wound, and laced with carbon aero blade spokes, the 500 C UL delivers maximum speed, instant power transfer, and uncompromising control.

Freehub Options

Compatible with Shimano 8/9/10/11 speed cassettes · Built to order: ships 5 to 8 weeks after payment.

Axle Configuration

12x100mm front, 12x142mm rear · Built to order: ships 5 to 8 weeks after payment.

Finish

Both without clear coat: the bare 1k carbon surface.

Decals

Tool access holes

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Shipping Built to order: ships 5 to 8 weeks after payment. Shipping to the UK is free, with duties and VAT included, so the checkout price is the delivered price.

Warranty Rims 5 years, wheelset 2 years, against defects in materials and workmanship.

Carbon Care 35% off the list price of a replacement after a crash in years 1 and 2, 25% in years 3 to 5. Original owner.

Returns 14 days from delivery for unused items, by mail, from anywhere we ship.

In the box Tubeless tape and valves included.

Carbon Care

A crash should not cost you a whole wheelset. If you damage a Venn wheel in a crash within 5 years of buying it, Carbon Care lets you buy a replacement at a discount on its list price: 35% in the first two years, 25% in years 3 to 5.

Covers accidental crash and impact damage. Manufacturing defects are separate and are always repaired or replaced free under the warranty.
The discount is taken from the list price (recommended retail price), not from the price you paid. A single wheel is priced at 40% (front) or 60% (rear) of the wheelset's list price, less the discount; if both wheels are damaged, the discount applies to the full wheelset.
Available to the original owner for 5 years from the purchase date.
To claim, send proof of purchase and photos of the damage. One claim per incident.
Non-transferable.

All duties and VAT included. No surprise fees at delivery.

Verifiable claims · this wheelset

998 g ±30 System weight as weighed, not quoted Product spec ↗ ±0.1 mm Dimensional tolerance on this rim Manufacturing ↗ 500 kgf Carbon spoke destructive load Spoke tech ↗ 100 J Rim impact pass mark (the UCI asks for 40 J) Testing ↗ 15 QC testing steps before this wheelset ships Testing ↗

The Venn record: the first filament wound bicycle rims, with a Eurobike Award in 2015 · Taiwan patents TW I607894 and TW I634964, granted · impact tested from 100 J, where the UCI requires 40 J · 10 awards and honours since 2010. Our story · Built with Venn: riders' builds

AERODYNAMIC & CLIMBING EXCELLENCE

The Venn 500 C UL strikes the ultimate balance between gravity-defying weight and wind-cheating aerodynamics. The 50mm profile delivers superior speed on the flats, while the ultra-low 998g system weight makes them a formidable weapon on the steepest UK climbs. The expansive 29.5mm (edge) to 32mm (max) external and 25mm internal width creates a seamless aerodynamic transition with modern, wider road tyres.

ADVANCED CONSTRUCTION & FINISH

Built with the most advanced carbon layup to strip away every unnecessary gram. The rims carry no clear coat: choose the bare carbon in gloss or matte, or the 25k filament-wound surface for 25 g more per rim, all at the same price.

PREMIUM COMPONENTS

Equipped with our highly reliable 36-tooth ratchet hub system and premium S&S ceramic bearings, the 500 C UL delivers instantaneous power engagement and frictionless rolling efficiency. Fully tubeless-compatible, the wheelset comes with tubeless tape for either traditional clincher or modern tubeless setups.

Technical specifications

Rim Venn 500 TCD UL

Rim depth 50 mm

Internal width 25 mm

External width 32 mm at the widest point, 29.5 mm at the uprights

Recommended tire width 28–35 mm

Brake Disc, Center Lock rotor mount

Spoke count (front / rear) 20 / 20

Spoke type Carbon aero blade

Hub system 36-tooth ratchet

Bearings S&S ceramic

Impact rating 100 J

System weight 998 g ±30 g

Finish No clear coat; gloss, matte or 25k filament wound (+25 g per rim)

In depth

Uncoated Finish, Your Choice

The 500 C UL carries no clear coat, whichever surface you choose: gloss, matte, or the 25k filament-wound pattern. Leaving the coating off shaves rotational weight at the rim perimeter and keeps the quality of the underlying carbon structure on open display. Gloss and matte weigh the same; the 25k filament-wound surface adds 25 g per rim. All three cost the same.

Aerodynamic Profile

The 50mm depth is meticulously sculpted to maintain sail-effect propulsion in crosswinds while minimising steering torque. The ultra-wide 29.5mm–32mm external and 25mm internal dimensions perfectly support 28mm to 35mm tyres, dramatically reducing rolling resistance and significantly improving comfort and grip on rougher British tarmac.

Venn 500 C UL Rim Profile

Carbon Blade Spoke Technology

Laced with a lower count of carbon aero blade spokes, this wheelset offers an exceptional stiffness-to-weight ratio. Carbon fibre's near-zero elongation under load ensures that every watt of your power translates directly to forward motion, while the bladed profile slices through the air with minimal drag.

Technical Specifications

- Rim Depth: 50mm - Internal Width: 25mm - External Width: 29.5mm (at edge) / 32mm max - Spoke Count: 20 Front / 20 Rear - Spoke Type: Carbon Aero Blade - Hub System: 36-tooth ratchet - Bearings: S&S Ceramic - System Weight: 998g +/- 30g - Finish: No clear coat; gloss, matte or 25k filament wound (+25 g per rim)

Questions riders ask

How does the Venn 500 C UL achieve a sub-1000g weight with a 50mm depth?

Achieving a 998g wheelset weight required optimising every single component. We utilised advanced carbon layup techniques, left off the traditional clear coat, and integrated ultra-light carbon aero blade spokes with a state-of-the-art ratchet hubs.

What tyre sizes work best with the 25mm internal width?

The wide 25mm internal width is perfectly optimised for modern, high-volume road tyres. We highly recommend tyres between 28mm and 35mm. This setup maximises aerodynamic airflow over the 29.5mm–32mm external rim, lowers rolling resistance, and allows for lower tyre pressures to enhance comfort and grip.

What are the benefits of an uncoated finish?

Skipping the traditional clear coat saves rotational weight at the perimeter of the wheel, making accelerations feel snappier. It also leaves the carbon structure visible, so the quality of the layup is on show rather than hidden under paint. Gloss and matte weigh the same; the 25k filament-wound surface adds 25 g per rim.

Are these wheels durable enough for daily riding?

Absolutely. Despite their ultra-light weight, the carbon spoke lacing, premium S&S ceramic bearings, and robust 36t ratchet hub are designed to withstand the rigours of high-mileage training and racing. The raw carbon finish is exceptionally resilient to standard road debris.

How much does the Venn 500 C UL weigh?

The 500 C UL wheelset weighs just 998g, a sub-1000g system weight that's exceptional for a 50mm-deep aero wheel, making it fast on the flats and featherlight on climbs.

Which freehub options are available for the 500 C UL?

Shimano HG, SRAM XDR, and Campagnolo N3W freehub bodies are available, covering all major 11- and 12-speed road drivetrains. Choose your freehub at checkout.

Are the 500 C UL wheels tubeless-ready?

Yes. The 500 C UL is tubeless-ready and ships with tubeless tape and valves included. The 25mm internal width pairs well with modern 28-35mm tubeless road tyres for a smooth, aerodynamic tyre-to-rim transition.

Is a 50mm-deep wheel hard to handle in crosswinds?

The 50mm profile is tuned as an all-round aero depth, it delivers clear watt savings at speed while staying controllable in gusts. Riders in consistently windy areas sometimes pair it with a shallower front, but most find the 500 C UL composed across conditions.

Not sure this is the right wheelset?

Ask Venn's engineering team, not a call center.

Ask our engineers