Mavic Cosmic SLR 32 Disc Wheelset

The Mavic Cosmic SLR 32 Disc Wheelset occupies a particular spot in the carbon wheel market that most riders eventually come looking for — a wheel deep enough to hold speed on open roads, light enough that climbs don't punish you for your equipment choices, and stiff enough to respond when you put real power down. At 32 mm of rim depth, the Cosmic SLR 32 is not chasing aero glory. It's built around range, around the rides where the route changes character every twenty minutes and you need a wheel that changes with it.

Mavic constructs the rims from 100% carbon fiber using their Fore Carbon tapeless process — an approach that integrates the spoke bed directly into the rim body, eliminating the need for rim tape. For tubeless setup, that means a cleaner, lighter seal and a more reliable interface between tire and rim over the long term. The system runs on Mavic's UST road tubeless standard, which is designed to seat and seal without the workarounds that tape-dependent wheels often require. The 21 mm internal width is a genuinely modern dimension here, supporting 28 mm and wider tires in a way that older, narrower rims simply can't — better tire profile, more stable cornering, and improved rolling efficiency when pressure comes down.

The hub is where Mavic has put serious engineering effort. The Infinity hub at the rear runs their Instant Drive 360 freehub mechanism, a design intended to reduce the dead angle between pedal input and rear wheel engagement. Whether you're accelerating out of a tight corner or responding to a move on a punchy climb, that near-immediate pickup is the kind of detail that reveals itself in feel long before it shows up in numbers. QRM Auto bearing preload self-adjusts over time to maintain consistent rolling resistance as bearings wear — so the wheels roll as well in their second season as their first. Thru-axle compatibility is built in at 12×100 front and 12×142 rear, with quick-release adapters included.

Mavic Cosmic SLR 32 Disc Wheelset Specs at a Glance

• Rim Material: 100% carbon fiber, Fore Carbon tapeless construction
• Rim Depth: 32 mm
• Internal Width: 21 mm
• Tubeless Standard: Mavic UST road tubeless, tape-free
• Freehub System: Instant Drive 360
• Bearings: QRM Auto self-adjusting preload
• Front Axle: 12×100 mm thru-axle (QR adapter included)
• Rear Axle: 12×142 mm thru-axle (QR adapter included)
• Brake Type: Disc brake
• Drivetrain Compatibility: Shimano / SRAM 11-speed (HG11)
• Spoke Count: 24 front / 24 rear

Design Benefits

1. Tape-Free Tubeless Setup: The Fore Carbon tapeless rim construction integrates the spoke bed directly into the carbon structure, removing the tape layer that most tubeless wheels depend on. This creates a more reliable seal with Mavic's UST system and reduces the number of variables that can cause tubeless failures over time — particularly useful on longer, more remote rides where a slow leak is more than just an inconvenience.
2. Wide-Rim Geometry for Modern Tires: The 21 mm internal width is designed to work with 28 mm and wider road tires at their intended profile, rather than pinching them into a shape the manufacturers didn't intend. Lower pressures become viable, grip improves through corners, and rolling resistance drops — all without adding rotating weight.
3. Instant Drive 360 Engagement: Mavic's freehub mechanism is built to minimize the angular gap between when you push the pedals and when the rear wheel responds. On group rides where accelerations are sharp and frequent, or in hilly terrain where momentum comes and goes, that responsiveness reduces the small inefficiencies that accumulate over the course of a hard ride.
4. Self-Adjusting Bearing Preload: QRM Auto is a bearing preload system designed to maintain consistent tension as the bearings wear in. Most hub bearings require manual adjustment over time to prevent play or excess drag from developing — this system compensates automatically, keeping the rolling character of the wheel stable across its service life.
5. Versatile Axle Compatibility: Thru-axle standards are built in at both ends, with quick-release adapters in the box for frames that require them. That flexibility means the Cosmic SLR 32 disc wheelset moves between bikes and build configurations without requiring a separate hub swap or adapter purchase.

Final Take

The Mavic Cosmic SLR 32 Disc is a carbon tubeless road wheel built for riders who want one set that handles the full range of what road cycling actually looks like — variable terrain, mixed conditions, rides where you're not sure what the last hour will demand. It rewards technically curious riders who want to understand why their equipment works, and it suits those who run wider tires and tubeless setups as a matter of course rather than novelty. This is a well-considered all-rounder from a brand that has been building wheels for a very long time.