Bola ULT 45R 700C Carbon Disc Wheelset — 45mm Deep, Tubeless Ready, 1230g

The Bola ULT 45R 700C Carbon Disc Wheelset is a mid‑depth aerodynamic carbon disc wheelset built for road racers, time‑trial enthusiasts, gran fondo riders and endurance cyclists who prioritize real‑world aerodynamic gains without sacrificing climbing capability and cross‑wind handling. Optimized for paved roads, fast rolling terrain and occasional light gravel, this T800 carbon wheelset delivers race‑ready performance at a fraction of the cost of premium big‑brand 45mm carbon wheel options.
Constructed from premium Toray T800 unidirectional matte carbon fiber, the complete wheelset weighs only 1240g per pair (±30g, excluding rim tape & valve). The 45‑mm rim depth delivers meaningful aerodynamic drag reduction on flat and rolling roads, while the competitive low pair weight keeps rotational mass in check for punchy accelerations and confident climbing. Compared to deeper 50‑60mm aero rims, the 45‑mm profile offers greatly improved cross‑wind stability, so you stay in control during gusty spring and autumn riding conditions.
Available in 28 mm external / 21 mm internal rim geometry, tubeless‑ready straight out of the box. Optimized tire range sits at 28‑42mm, perfectly matched for modern performance road tires. Run tubeless to drop tyre pressures, reduce road buzz, improve corner grip and lower pinch‑flat risk; it also works flawlessly with standard clincher tyres for riders not yet converted to tubeless setups.
At its core sits the precision‑machined BL100 hub equipped with TPI ceramic bearings and 54‑tooth ratchet engagement. High‑performance ceramic bearings cut rolling friction for ultra‑smooth free‑spinning and extended service life compared to standard steel bearing hubs. The 54T ratchet delivers fast 6.7‑degree engagement, nearly eliminating pedal lag; power transfers instantly during hard sprints, out‑of‑saddle climbs and corner exits. Laced with trusted Sapim CX‑Ray aero stainless steel spokes, using optimized 2x lacing pattern to balance lateral stiffness for efficient power transfer and vertical compliance to soften harsh road vibration over long‑distance rides.
Rigorously lab‑tested to ISO 4210‑7 cycling safety standards. Passes 750 000‑cycle fatigue testing and >40J impact resistance. Strict in‑house QC inspects rim trueness, roundness, spoke tension and dynamic balance for consistent build quality for race‑day and year‑round training. Maximum system weight reaches 110 kg, suitable for most rider + bike + gear combinations. UCI‑compliant construction makes it eligible for most sanctioned amateur road racing events.
Quick Buyer Insight vs Bola ULT 40R: The ULT 45R steps up to 45 mm depth for stronger aerodynamic performance on flats and rolling roads. It shares the same BL100 ceramic hub and Sapim CX‑Ray spokes as the ULT 40R, with slightly higher weight for greater aero benefit. Best for riders who spend most miles on paved tarmac; not designed for heavy‑load expedition bikepacking or aggressive downhill trails.