Corima DECiSiV TT Lenticular 700C Tubeless Hooked Carbon Front TT Wheel with Ceramic Bearings

Every watt turned into pure speed. When every tenth of a second matters, the DECiSiV TT becomes your greatest ally.

Features

• Designed for time trials and triathlon, this disc wheel delivers aerodynamic precision, high-speed stability, and uncompromising power transfer. At just 1015g, the DECiSiV TT ranks among the best-in-class disc wheels in terms of stiffness-to-weight ratio. The structural foam positioned toward the rim’s perimeter stiffens the wheel without unnecessary weight gain, and reduces micro-deformations under load.
• The weight savings achieved on the DECiSiV TT translate directly into enhanced responsiveness. Our internal inertia measurements show an 18% improvement compared to its predecessor, the C+ WS TT. Such a reduction in rotational inertia is immediately perceptible on the road: the wheel accelerates faster, reacts more sharply to pace changes, and transfers every watt with greater efficiency.
• Initially developed through advanced CFD simulations, the DECiSiV TT was then validated in real-world conditions — most notably in the wind tunnel.
• Every surface and contour of the DECiSiV TT has been engineered to reduce drag while maximizing efficiency and stability, even at high speeds or in unpredictable crosswinds.
• Since the beginning, CORIMA’s one-piece disc wheels have integrated structural foam — and the DECiSiV TT is no exception. Placed within the sidewalls of the rim and sandwiched between two carbon skins, the high-grade PMI (polymethacrylimide) structural foam ensures an exceptional stiffness-to-weight ratio.
• This architecture keeps the wheel perfectly stable at high speed while delivering instantaneous power transfer — exactly what you expect from a top-tier time-trial or triathlon disc wheel.
• This rim profile is ideally matched to today’s 25–30mm tyres, reducing rolling resistance while enhancing comfort during long-distance efforts. With our in-house CRR (Coefficient of Rolling Resistance) testing protocols, we evaluated multiple configurations to determine the optimal shape. Beyond the proven rolling-resistance gains, this internal width also guarantees stability at high speed.

Specifications

• ETRTO 622 x 22TC (28") tubeless hooked rear
• Shimano / HG Disc brake; Campagnolo Disc brake; SRAM XDR Disc brake
• Rim width : 30mm
• Axle : Thru axle Ø12 x 142mm
• Weight : 1015 g
• Carbon weave : Mat black UD
• Ceramic bearing

Shipped with

• Rim tape
• Protection wheelbag
• Valve TLR
• Disc valve adaptor air pipe at 90degrees
• Valve hole sticker