stainless steel cap with alloy 6mm bolt

They have hollow

BB HEIGHT:

Designed to be an all round

chromoly 3-piece cranks and fully sealed bearing throughout so the PRK really doesn't disappoint

Buddy MFG BB Buddy BF21 stainless steel cap with alloyWhilst grinding on the BB shell of your frame is cool, they're not designed for grinding. The BB Buddy is a replacement non drive bottom bracket spacer made for abuse and will give your frame some added protection. It sits at a slightly bigger diameter than your bottom bracket shell and is made out of post heat treated 4140 (the same stuff as a decent metal peg); this glorified washer will slide grinds faster and lock in better, ensuring your BB