Paul Components Chain Keeper 31.8mm Black Model=Alfine FC-S501 Crankset } Replacement external bottom bracket

} Replacement external bottom bracket engineered with stainless steel cups and an aluminum sleeve for durability and longevity

Thoughtful ergonomics and added hand positions to create a more dynamic bar

}e*thirteen BSA Theaded Bottom Bracket - 83mm For all e*thirteen Base Cranks with 24mm Spindle Black

}Stan's No Tubes Arch S2 Rear Wheel - 29" 12 x 148mm 6-Bolt HG11

Paul Components Chain Keeper 31.8mm Black Model=Alfine FC-S501 Crankset } Replacement external bottom bracketMachined aluminum Chain Keeper works either as a Singlespeed guide or with a 1X multi speed set up Clamp version mounts to the seat tube in place of the front derailleur and comes in 3 sizes Wide mouthed chain block and adjustable rod allow for precise alignment Use chain keeper extension (PC 2909) to fit some difficult frames (full suspension, tapered seat tube) Not intended for DH, FR, or big hit use Made in USA TECH SPECS model chain keeper mount