The Hope Pro 4 Boost rear hub is built specifically for 148x12mm thru-axle frames, with hub flanges shifted 3mm outboard compared to the standard Pro 4 — increasing overall wheel stiffness where it counts most. Machined from forged 2014 T6 aluminium billet in Hope's Barnoldswick facility, it's a hub you can rebuild and service for years.

  • Flanges moved 3mm outboard for a stiffer, more responsive wheel build
  • Forged 2014 T6 aluminium shell for excellent strength-to-weight ratio
  • 32-hole drilling suits most trail and enduro wheel builds
  • Compatible with Shimano 10/11-speed, 12-speed Micro Spline, SRAM XD, and Hope freehub bodies
  • Available in multiple colours: Black, Silver, Red, Blue, Purple and Orange
  • Fully serviceable with readily available Hope spare parts

Hope hubs are legendary for longevity and repairability. Every component — from the shell to the axle — is designed to be replaced rather than thrown away, keeping your build running season after season. The Pro 4 uses Hope's proven bearing and seal arrangement, balancing smooth roll with reliable dirt exclusion.

Fits 148x12mm (Boost) rear dropouts. Compatible with most modern MTB frames using the Boost standard. End spacers available separately for 141x QR conversion.

Hope Technology offers a lifetime warranty on their hubs against manufacturing defects. Warranty claims for this product should be directed to Tune Cycles. Return the item to us with proof of purchase and we will manage the warranty process with the brand on your behalf.
  • Forged 2014 T6 aluminium billet construction for a strong, lightweight hub shell
  • Boost-specific flange position (3mm outboard vs standard Pro 4) for increased wheel stiffness
  • 32-hole drilling compatible with standard trail and enduro wheel lacing patterns
  • Supports Shimano 10/11-speed, Micro Spline 12-speed, SRAM XD, and Hope freehub bodies
  • Multiple colour options to match your build
  • Fully rebuildable and serviceable with off-the-shelf Hope spare parts
SpecificationValue
Axle StandardThru-Axle 12mm
OLD (Over Locknut Distance)148mm (Boost)
Spoke Holes32H
Shell MaterialForged 2014 T6 Aluminium
Freehub CompatibilityShimano 10/11-speed, Micro Spline 12-speed, SRAM XD, Hope
PositionRear
Weight311g (36H, Shimano freehub)
SKU BSP-HOPH4RB
Brand Hope