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Project 321 Boost Rear Disc Hub 148mm HG Quiet Pawls



The Project 321 Boost Rear Hub is an instant classic. It is everything you could want from a rear hub: ultra-fast engaging, super low drag, lightweight, easy to service, and meticulously designed and built. Details such as a revolutionary drive system, high capacity oil chamber, angled flanges, brilliant finishing, tension adjustable axle and high quality bearings. All Project321 rear hubs are now equipped with the new magnetically actuated, 6 pawl, ratchet drive system. This new system gives you a combination of options and features like no other drive system on the market. The angled flanges allow the spokes to touch the hub only at the bend and nowhere else. This creates a more stable and true wheel and eliminates any unnecessary stress on the spokes. Rotor bolt holes are form tapped which creates a stronger, cleaner thread than the more common method of cut tapping. 10 years on hub shell and axle, 3 years on pawls, drive ring, and free hub body and 1 year Enduro bearing warranty. (For original owner only; does not apply to anodize fading). Project 321 hubs feature a CNC engraved logo and comes standard with 2 high precision Japanese cartridge bearings. Available in all 10 color options with long lasting anodization. Made in the USA.

Axle Type: 148mm x 12mm TA
Hub Spacing: 148mm
Engagement Speed: 1.7-216 POE (6x2)
Pawls: Quiet
Cassette Body: Shimano HG, 10 and 11 speed
Spoke Drilling: 28, 32 hole
Weight: 282.3 grams
Thru-Axle Not Included

Model Number
Item Code
Project 321 Boost Rear Disc Hub 148mm HG Quiet Pawls