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Project 321 Front MTB Disc Hub Blue Boost

$129.00 Out of stock

Part number P321FRB32BLU

Project 321's Front MTB disc hub -  Boost 110mm

P321's Boost Front Hub has all of the same attributes as the ISO Front Hub but with a 10mm wider spacing to be compatible with the new Boost standard released by Trek in 2015. The purpose of this is to create a stronger and stiffer wheel by improving the bracing angle of the spokes. Unlike most hub manufacturers, P321 have put a little more thought into this new design. Most manufacturers have chosen to simply move both of the flanges out by 5mm (or worse yet, extend the axle and leave the hub shell the same). The problem with this is that a typical front wheel has an imperfect spoke tension ratio so by moving both flanges equally they may be widening bracing angles but they are ignoring the issue of tension. What sets P321's Boost front hub apart is that they have decided to move the left flange out by 5mm but actually leave the right flange where it is. In doing this they have made it so that the spoke tension ratio is much closer to equilibrium and this yields a stronger and stiffer wheel than if they were to merely follow suit with the same design as everyone else.

Thoughtfully angled flanges. This is a big one, folks. P321 are the only manufacturer on the market to create a little to no-touch environment that allows 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. P321 have achieved this by adjusting the angle of the flanges slightly inward to mimic the angle of the spokes and remove any interference.  On many of the competitors’ hubs the flanges are vertical causing the spokes to have to bend around the flange creating a stress point and reducing the strength of the wheel.

Rotor bolt holes are form tapped which creates a stronger, cleaner thread than the more common method of cut tapping.

Hubs also feature a CNC machined logo versus a lasered or stickered logo.

  • 15mm Boost 110mm spacing
  • (24h, 28h and 36h available for special order only - contact us)
  • High Precision Japanese Cartridge Bearings
  • Hub Shell Dimensions
  • Weight - 174g
  • Made in the USA