The Evolve FR BB uses the stronger M12 spindle and is intended for riders that want the strength of a DH BB but want to use a triple chain ring setup instead of a chainguide.

All Evolve Series BB's feature slide on cartridge bearings with full ball construction. These are lighter, stiffer and feature a higher load carrying capacity than the typical one-piece cartridge bearings. And with twice as many balls per bearing as the competitors, these bottom brackets spin smoother and last longer. To further enhance performance Race Face uses their own proprietary grease formula. This increases the bearing life up to four times.

Specifications

• Material: CNC machined, heat treated, hollow chromoly, shot peened, M12 spindle 
• Weight: 280 grams 
• Heavy duty hollow Cromoly spindle
• Compatibility: ISIS spline
• Lip seals/labyrinth seals keep out contaminants
• Bearings: Single row, double sealed cartridge bearings, with two bearings on the drive side.
• Adjustable: Cups fit 68 and 73mm shells and allows adjustability of the chain line
• Size - 68/73 X 113mm (Washer supplied)