CeramicSpeed BB ALPHA Bottom Bracket - BB92 89.5/92mm For SRAM DUB Spindle MTB BLK MFPN=RD25-EKGT13 – Allows maximum gliding and GL00521

CeramicSpeed BB ALPHA Bottom Bracket BB92 89.5 92mm For SRAM DUB Spindle MTB BLK MFPN=RD25 EKGT13 – Allows maximum gliding and GL00521 – Allows maximum gliding and abrasion resistance (mm) 36 Spring Weight 480 Custom made light contact seals with stainless steel covering the backside strike the perfect balance between efficiency and protection while offering the trademark low friction CeramicSpeed performance Inside the BB ALPHA the bearings have been moved further out in the cup allowing the incredibly stiff POM plastic dust covers to now sit flush with the outer edge of the cup making it increasingly difficult for debris to penetrate the dust cover and contaminate the bearing