The Gates Carbon Drive CDX Fin Line 50-tooth front sprocket represents the pinnacle of belt drive technology for high-performance electric bikes, long-distance trekking bikes and demanding off-road applications. Designed with patented CenterTrack Fin Line technology, this hard-anodized 6061 aluminum sprocket offers ultra-quiet operation, exceptional wear resistance and optimized self-cleaning, even in the most challenging conditions (mud, snow, sand).

CDX Fin Line Technical Highlights

• CenterTrack Fin Line Technology: Central guide flange with open tooth profile (Fin Tooth) incorporating dirt evacuation channels. This exclusive design ensures perfect belt alignment and superior self-cleaning, effectively eliminating mud, snow and debris.
• Hard Anodization: The hard-anodized surface treatment significantly increases sprocket lifespan by enhancing abrasion and corrosion resistance, while maintaining minimal weight.
• Aerospace-grade 6061 Aluminum: Offers the best compromise between lightness, rigidity and durability. Robust construction to withstand the high torque of mid-drive electric motors and intensive use.
• CDX System Compatibility: Optimized exclusively for Gates Carbon Drive CDX belts (11 mm pitch). Not interchangeable with CDC or CDX MudPort systems.

Mounting Specifications and Compatibility

• 5-arm BCD 130 mm configuration: Standardized interface compatible with most road, gravel and trekking cranksets on the market (Shimano, SRAM, FSA, Rotor, etc.). Simple and universal installation.
• 50 teeth: Versatile gearing suitable for electric bikes, trekking bikes and urban/gravel configurations. Enables balanced ratios for mixed road/off-road use.
• 11 mm pitch: Gates CDX system standard ensuring precise meshing and optimal power transfer without slippage.
• Important note: Mounting bolts NOT included. Compatible with standard M8 chainring bolts or equivalent depending on your crankset.

Recommended Use and Performance

This CDX Fin Line sprocket is specifically designed for high-performance applications requiring reliability and low maintenance: mid-drive electric bikes (high torque), long-distance bikepacking and touring, off-road MTB and gravel, high-end urban bikes. The Fin Line profile with its integrated channels ensures flawless operation in all weather conditions and on all terrain types, including muddy, snowy or sandy environments.

Available Variants

• 46-tooth variant: EAN 4262428337359 / Manufacturer ref. 78980704-AM — Larger gearing for fast road/gravel use
• 48-tooth variant: EAN 4262428338097 / Manufacturer ref. 78980706-AM — Ideal balance for trekking e-bikes
• 50-tooth variant: EAN 4262428336376 / Manufacturer ref. 78980695-AM (this product) — Maximum versatility
• 55-tooth variant: EAN 4262428336383 — Reduced gearing for mountainous terrain or heavy loads

All variants share the same technical characteristics (6061 aluminum material, hard anodization, 5-arm BCD 130 mm mounting, CenterTrack Fin Line technology) and are compatible with all Gates CDX belts.