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.