Jitsie ISIS Bottom Bracket

Description The Jitsie ISIS Bottom Bracket is designed for trials riders who demand maximum durability, smooth rotation, and strength under heavy pedal loads. Built around a tough chromoly steel spindle and high-quality sealed cartridge bearings, it delivers reliable performance in all riding conditions. The alloy cups and body help reduce overall weight without sacrificing stiffness, while the standard 1.37″ × 24 TPI (Euro / BSA) threading ensures compatibility with most modern trials frames. Available in two axle lengths, the Jitsie ISIS Bottom Bracket adapts to different crank and frame setups. Versions 118mm Version Chromoly steel M15 spindle Fits 68mm wide bottom bracket shells Supplied with steel M15 bolts 128mm Version Chromoly steel M12 spindle Fits 68mm and 73mm wide bottom bracket shells Includes steel M12 bolts Supplied with 2.5mm spacer for use with 68mm shells Key Features ISIS spline interface Sealed cartridge bearings for longevity Alloy cups and body for reduced weight Chromoly steel spindle for strength 1.37″ × 24 TPI (BSA / Euro) thread Weight 118mm – 276g 128mm – 360g Which One to Choose? 118mm – Suitable for Varial 20″ (920 / 970 / 1010mm) 128mm – Suitable for Varial 24″ / 26″ Whether you’re upgrading or replacing a worn unit, the Jitsie ISIS Bottom Bracket offers dependable performance and compatibility for competitive trials riding.