BWW Pure XM MTB Hub Set 535g


Pure XM’s are similar in fit and function to heavy duty Shimano MTB 6-bolt offerings, but wrapped in a light weight sealed bearing hub shell design.


Pure XM’s are a quality sealed bearing solution alternate to venerable Shimano Deore’s or XT 6-bolt hubs.  The internal freehub ratchet engagement is of a comparable design as those aforementioned favorites, but without the heavier loose ball, cup + cone bearing/axle system.  The Pure XM’s simply the axle and bearing arrangement to make use of high quality, free spinning sealed cartridge bearings and thus shave a fair amount of hub weight off, about 140g’s worth, or almost an entire front hub’s worth of weight savings.

BWW Pure XM MTB Hub Set Specs

XM160 / XM375 Front Rear Wheel Weights (approx)
Hub Info Pure XM160 Pure XM375
Hub Weight 160g (QR), 158g (15TA) 375g (QR) 160g F, 375g R
Hub Shell Aluminum Alloy
Axle Info QR 9mm x 100mm OLD QR 10mm x 135mm OLD
Hole Ct 32H 32H
DriveS PCD
45 45
DS Ctr to Flange 32.5 19.5
Non-DriveS PCD 58 58
NDS Ctr to Flange 22 34.5
Axle Material Steel Alloy
Convertible Axles Yes – Front = 9mm x 100mm QR, 15mm x 100mm TA
No – Rear = 10mm x 135mm QR
Bearings Sealed Cartridge Taiwan EZO Bearings
Bearing Size TBA TBA
Freehub Shimano/SRAM MTB 8/9/10/11 speed or Road 8/9/10 speed
FH Material Steel Alloy
    • All options include QR levers.

Additional information

Weight 7 lbs
Dimensions 30 × 7 × 26 in


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