68mm Road ConvBB30/PF30 GXP ISIS2 with R-Collet

Praxis M30 ConvBB30/PF30 GXP ISIS2 Bottom Bracket 68mm Road is engineered for riders who want maximum crank stability, smooth bearing performance, and reliable fitment in BB30, PF30, and Specialized OSBB road frames. Designed specifically for M30 spindle-based cranksets, this advanced bottom bracket system delivers excellent rigidity while eliminating common alignment and tolerance problems found in traditional press-fit systems.

Praxis uses its patented expanding Collet technology to create a secure and precise fit inside the frame shell. The longer non-drive cup presses into the frame while the shorter drive-side cup threads into place, evenly distributing pressure for improved stability and quiet operation. This design keeps the cartridge bearings positioned outboard of the frame at Shimano specification spacing, increasing drivetrain stiffness and pedaling efficiency.

The integrated compressible O-ring helps compensate for frame shell width inconsistencies, reducing movement and improving long-term durability. Ideal for road cyclists seeking smooth power transfer, quiet performance, and dependable compatibility with modern press-fit frame standards.

Key Features

• Compatibility: Designed for M30 spindle cranksets

• Frame Compatibility: Fits BB30, PF30, and Specialized 2014-2015 OSBB frames

• Shell Width: Compatible with 68mm road frame shells

• Technology: Patent-pending expanding Collet system

• Bearing Position: Outboard bearing placement for improved rigidity

• Installation System: Thread-together cup design for secure fitment

• Noise Reduction: Helps minimize creaking and frame movement

• Alignment Stability: Prevents bearing misalignment and cup movement

• Frame Compensation: Compressible O-ring adjusts for shell tolerance differences

• Performance: Improved power transfer and drivetrain efficiency

Product Specifications

• Product: Praxis ConvBB30/PF30 GXP ISIS2 Bottom Bracket

• Crank Compatibility: M30 spindle cranksets

• Frame Standards: BB30, PF30, Specialized OSBB

• Frame Width: 68mm Road

• Bottom Bracket Type: Press-fit conversion bottom bracket

• Bearing Placement: Outboard bearing system

• Cup Design: Thread-together expanding collet system

• Frame Fit System: Precision expanding collet technology

• Application: Road bike drivetrain systems

• Purpose: Stable crank installation with improved rigidity

Frame Fit Technology

• Collet Expansion System: Expands evenly for a secure and precise frame fit

• Thread-Together Cups: Connects both sides for maximum stability

• Tolerance Compensation: O-ring design adjusts for frame width variations

• Rigid Interface: Reduces flex during hard pedaling efforts

• Secure Bearing Alignment: Prevents bearing movement and walking inside the frame

Easy Operation / Usage

• Press the longer non-drive cup into the frame

• Thread the shorter drive-side cup into position

• Collet system automatically expands for precise fitment

• Compatible with BB30, PF30, and select OSBB road frames

• Professional installation recommended for best performance

Why Choose This Product

• Advanced Fit System: Collet technology delivers secure and stable installation

• Smooth Riding Performance: Improves drivetrain efficiency and pedaling feel

• Reduced Noise: Helps eliminate creaking associated with press-fit systems

• Enhanced Durability: Maintains bearing alignment over long-term use

• Road Cycling Optimized: Built specifically for high-performance road applications

• Trusted Praxis Engineering: Precision design with reliable compatibility

In the Box

• Praxis ConvBB30/PF30 GXP ISIS2 Bottom Bracket

• Drive-side cup

• Non-drive-side cup

• Integrated collet system

• O-ring components

• Product documentation