Super Boost (157)
Super Boost (also called Super Boost Plus) is the widest rear hub standard: 157 mm, 9 mm more than Boost 148, with a 12 mm thru-axle. It takes the Boost idea to the extreme: hub flanges spread even further for a maximally stiff 29-inch wheel, with room for very wide tires and short chainstays on enduro and downhill bikes. Its chainline rises to ≈55 mm. It isn't compatible with 148 frames or their drivetrain.
It's the width for those who ride hard: 29-inch enduro and downhill. It shares the measurement with old DH 157, but with optimized hub flanges.
What it is and what for
Super Boost solves the lack of chainstay clearance on long-travel 29-inch enduro bikes: widening to 157 mm fits very wide tires without losing rigidity. It shares the width with the classic downhill standard (DH 157), but trail/enduro Super Boost spreads the hub flanges further. It requires a 157 frame and a chainring with ≈55 mm chainline.
Key data
What it fits
It fits only frames designed for 157 mm and needs a chainring with ≈55 mm chainline. It won't fit Boost 148 frames. A classic DH 157 hub fits physically, but without the optimized Super Boost flanges it won't reach the rigidity the frame design intends.
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Frequently asked questions
Is Super Boost 157 compatible with a Boost 148 frame?
No. Different widths; the frame must be 157 mm. You can't mount a 157 hub on a 148 frame.
Are Super Boost and DH 157 the same?
They share the width (157 mm), but enduro/trail Super Boost spreads the hub flanges further to optimize 29-inch wheel rigidity.
Do I need a special chainring for Super Boost?
Yes: the chainline rises to ≈55 mm, so the ring must be designed for that offset.