Swix BP99 Base Prep Soft, 900g MFPN=00.3018.303.004 30mm diameter makes the Burr

30mm diameter makes the Burr an ideal grip for riders with small-to-average size hands

5 Damping RCT Spring Type DebonAir Shaft Eyelet Trunnion Spring Adjustments Air pressure Bottomless tokens Primary Color Black

New in 2026

BB Included No Chainline/Hub Compatibility 157 Super Boost Hubs Chainring BCD Direct Mount SRAM Color Lunar/Polar Crank Intended Use Mountain Crank Length (mm) 175 Defined Color Gray Drivetrain Speeds 12 Number of Chainrings Chain Retaining Single Pedal Spindle 9/16" Rings 32 Spindle Interface Type SRAM DUB keyword search X01 keyword search XO1

Upgraded with the double BOA® Fit System which delivers a micro-adjustable

Swix BP99 Base Prep Soft, 900g MFPN=00.3018.303.004 30mm diameter makes the Burr