Ascent Bottom Bracket

Revolution Bottom Bracket Series The Revolution Bottom Bracket Series is engineered to deliver exceptional drivetrain efficiency, precision alignment, and long-term durability. Manufactured from CNC-machined 6061-T6 aluminum and fitted with premium NTN precision bearings, every Revolution bottom bracket is designed to provide smooth, reliable performance for road, gravel, and performance cycling. 🔥 Precision. Smoothness. Reliability. 🔥 🚲 Precision CNC Machined 6061-T6 Aluminum Construction 🚲 Premium NTN Precision Steel Bearings 🚲 Replaceable Bearings for Extended Service Life 🚲 Excellent Bearing Alignment for Reduced Friction 🚲 Optimized Frame Compatibility with Narrow Shell Design (T47) 🚲 Designed for Road & Gravel Performance Bikes Available Variants ✔ T47 (External / Internal) Designed for modern T47 frames, the Revolution T47 bottom bracket features a precision-machined two-piece aluminum shell that maintains perfect bearing alignment while improving frame compatibility through its specially narrowed center section. Compatible with both T47 External and Internal frames. Weight: Approx. 130g Crank Compatibility: Shimano Hollowtech II (24mm), SRAM DUB (28.99mm), 30mm Spindle (Long), GXP (with optional sleeve) ✔ BSA 68mm The Revolution BSA bottom bracket utilizes a precision-machined threaded two-piece aluminum construction that securely aligns both bearing cups for exceptionally smooth rotation and reliable long-term performance. Weight: Approx. 100g Crank Compatibility: Shimano Hollowtech II (24mm), GXP (with optional sleeve) ✔ BB86 Press-Fit Featuring a precision-machined one-piece aluminum shell, the Revolution BB86 offers excellent bearing alignment and simplified installation while maintaining exceptional smoothness and durability for press-fit frames. Weight: Approx. 100g Crank Compatibility: Shimano Hollowtech II (24mm), GXP (with optional sleeve) Built to Last Every Revolution bottom bracket is equipped with premium NTN LLB sealed bearings for outstanding smoothness, durability, and weather resistance. The bearings are fully replaceable using standard bearing tools, allowing the bottom bracket to deliver years of reliable performance without replacing the entire unit.