PF30 MTB standard shares a shell diameter, 46mm, with the road version, but has a wider shell, 73mm. It was introduced to give frame builders more design flexibility. This parcel helps you to mate your Quarq and SRAM cranks with a PF30 MTB frame.
PF30 Bottom Bracket for SRAM GXP MTB comes with Coated Bearings installed. The Coated Bearings have an additional benefit: a 3-micron thick metallic layer over the races. This addition makes the races harder and smoother, lowering drag and increasing life.
Our PF30 cups are joined by a spacer tube, reducing the likelihood of creaking and increasing the reliability, as well as protecting internal cabling from being abraded by the 24/22mm spindle on Quarq/SRAM cranks.
CeramicSpeed Coated Bearings typically have frictional drag of 0.3-0.4 watts per set. That represents an average 75% drag reduction compared to standard bottom brackets. The hardened-steel races feature the CeramicSpeed Balls that are 100% smoother and 15% harder than the ceramic competition. The CeramicSpeed Bearings last at least three times longer than other bearings.
Coated Bearings drop friction further and increase lifespan. The coated races see a 50% drag reduction and an improvement in bearing life of 60%.
Performance can be improved by changing the grease packed in the bearings. Long Life Grease comes installed, but can be changed for lower drag All Round Grease for lower drag or less messy conditions. Race Day Grease has lower drag still and is designed for clean conditions.
In The Box:
– 2 cups with bearings installed.
– 2 dust covers.
– 2 1mm spacers.
– 2 0.5mm spacers.
– GXP wave washer.
– Spacer tube.
– Ceramic Speed LongLife Grease.
– Sticker sheet.
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