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GP45 Carbon

Regular price $1,400.00 USD
Hub: ROL CLD
Freehub Body: Shimano HG
Axle: 12x100/12x142

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GP45 Carbon
$1,400.00 USD
ROL CLD / Shimano...
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GP45 Carbon


Description

The GP45 Carbon is ROL Wheels' ultimate do-everything wheelset, hand built in Denver, Colorado and engineered to perform across the full spectrum of cycling - from champagne gravel roads and rough pave to singletrack bikepacking routes. With a 45mm rim depth and an exceptionally wide 28mm inner width, this wheel strikes a rare balance between aerodynamic efficiency and versatile tire compatibility, accommodating everything from 28C road tires up to 57mm gravel and even mountain tires. The wide profile reduces air turbulence at the tire-rim transition for optimized aero performance while increasing tire volume for improved rider comfort and control on rough or poorly maintained surfaces.

Built from Toray T700 and T800 premium carbon fiber, the GP45 Carbon weighs in at just 400g per rim and meets 2.25x the impact strength of UCI standards at 40 joules - giving you confidence on the most demanding terrain. Whether you're lining up for a gravel race, grinding out a long touring ride, or pushing through crosswinds on a mountain stage, the GP45 Carbon is built to handle everything you throw at it.


Key Features

  • 45mm Rim Depth: Versatile depth that balances aerodynamic performance and crosswind stability across road, gravel, and singletrack terrain.
  • 28mm Inner Width / 35.7mm External Width: Accommodates tires from 28C road tires up to 57mm gravel and mountain tires, optimizing tire profile and aero transition.
  • Toray T700 & T800 Premium Carbon Fiber: High-modulus carbon construction delivers a lightweight, stiff, and durable rim for performance riding.
  • 400g Rim Weight: Exceptionally light for a 45mm deep carbon rim, keeping rotational weight low for better climbing and acceleration.
  • 2.25x UCI Impact Strength Standard (40J): Built to handle real-world impacts well beyond minimum safety certifications.
  • Tubeless Ready with Semi-Hooked Bead: Full tubeless compatibility for lower tire pressures, improved traction, and reduced flat risk.
  • 24-Spoke / 2-Cross Pattern with Proprietary Lightweight Spokes and Brass Nipples: Precision lacing for optimal stiffness, durability, and power transfer.
  • 28-Spoke Option Available: Riders between 220 and 280 pounds can opt for a heavier-duty 28-spoke build for added strength and reliability.
  • Max Rider Weight - 280 lbs: Custom options are available for heavier riders - simply contact us for details.
  • Hand Built in Denver, Colorado: Every wheelset is individually assembled and trued by skilled builders for a level of craftsmanship that factory wheels can't match.

Hub Options & Which to Choose

  • ROL CLD Hub: ROL's own centerlock disc hub - a high-performance, reliable hub built specifically to complement the GP45 Carbon. A great choice for riders who want an excellent complete system at a strong value. Compatible with Shimano HG, SRAM XDR, Shimano Microspline, and Campagnolo freehub bodies.
  • White Industries CLD Hub: A premium American-made centerlock disc hub renowned for its buttery-smooth engagement, long service life, and exceptional build quality. The ideal choice for riders who demand the absolute best and want a hub that will last decades with minimal maintenance. Compatible with Shimano HG, SRAM XDR, Shimano Microspline, and Campagnolo freehub bodies.

What's Included

  • GP45 Carbon wheelset (front and rear)
  • Selected hub (ROL CLD or White Industries CLD)
  • Selected freehub body (Shimano HG, SRAM XDR, Shimano Microspline, or Campagnolo)
  • Lightweight proprietary spokes with brass nipples

Why You'll Love It

The GP45 Carbon isn't a compromise wheel - it's a wheelset that genuinely excels whether you're racing gravel, exploring remote trails, or pushing pace on road. Every set is hand built in Denver, Colorado by skilled craftspeople who take pride in every spoke tension and every true - something you simply don't get from mass-produced factory wheels. The choice between ROL CLD and White Industries CLD hubs means you can configure this wheelset to exactly the standard you demand, from excellent to exceptional. Tubeless compatibility, broad tire clearance, and a rim profile engineered to reduce turbulence mean you're always set up for the best possible ride, no matter the conditions. For serious cyclists who want one wheelset that does it all without compromise, the GP45 Carbon is the answer.


Product Specifications

View Product Specs
Rim Depth 45mm
Internal Width 28mm
External Width 35.7mm
Rim Material Toray T700 & T800 Premium Carbon Fiber
Rim Weight 400g
Impact Strength 40J (2.25x UCI standard)
Bead Type Semi-Hooked, Tubeless
Spoke Count (Standard) 24 spokes, 2-cross pattern
Spoke Count (Heavy Rider Option) 28 spokes (riders 220-280 lbs)
Spokes Lightweight proprietary spokes with brass nipples
Max Rider Weight 280 lbs (custom options available for heavier riders)
Recommended Tire Width 28mm to 57mm
Axle Compatibility 12x100 (front) / 12x142 (rear), custom axle options available
Hub Options ROL CLD or White Industries CLD
Freehub Compatibility Shimano HG, SRAM XDR, Shimano Microspline, Campagnolo
Built Hand built in Denver, Colorado

FAQ

What tires work best with the GP45 Carbon?

The GP45 Carbon's 28mm inner width is designed to work with a wide range of tires from 28C and 30C road tires up to 57mm gravel and mountain tires. For road-focused riding, 32C-40C tires are a sweet spot. For gravel racing or bikepacking, 40C-50C tires will take full advantage of the wide rim profile and tubeless compatibility. The wide bead seat also optimizes tire shape for better aero performance and rider comfort compared to narrower rims.

Are these wheels tubeless compatible?

Yes - the GP45 Carbon features a semi-hooked tubeless-ready bead, making it fully compatible with tubeless tires and sealant setups. Running tubeless allows you to lower your tire pressure for better traction and comfort, and significantly reduces the risk of pinch flats on rough terrain. A tubeless valve and tape setup (not included) will be needed to complete the tubeless conversion.

Which hub should I choose - ROL CLD or White Industries CLD?

Both are excellent centerlock disc hubs, but they serve slightly different priorities. The ROL CLD hub is a high-performance hub built to match the GP45 Carbon perfectly at a great value. The White Industries CLD is an American-made premium hub with legendary durability, ultra-smooth engagement, and virtually lifetime serviceability - it costs more upfront but is built to last decades. If you want the best of the best and plan to ride hard for years, White Industries is worth the upgrade.

What freehub bodies are compatible?

The GP45 Carbon is available with freehub bodies for Shimano HG (11-speed road and mountain), SRAM XDR (road/gravel 12-speed), Shimano Microspline (12-speed mountain), and Campagnolo. Select your drivetrain's standard when configuring your wheelset at checkout.

I weigh more than 220 lbs - which build should I choose?

Riders between 220 and 280 pounds should opt for the 28-spoke build, which is available upon request and provides greater strength and durability for heavier riders. The maximum supported rider weight is 280 pounds. If you are above that threshold, contact us directly - custom options are available to build a wheelset suited to your needs.

Do I need a special axle for my bike?

The GP45 Carbon is configured by default for 12x100mm (front) and 12x142mm (rear) thru-axle standards, which covers the vast majority of modern road, gravel, and mountain bikes. If your bike uses a different axle standard, select the "Other Axle" option at checkout and the team will reach out to confirm the correct configuration before building your wheels.

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