Specialized Stumpjumper 2023 Geometry

	S1	S2	S3	S4	S5	S6
Crank Length	165mm	170mm	170mm	170mm	170mm	175mm
Handlebar Width	800mm	800mm	800mm	800mm	800mm	800mm
Stem Length	35mm	35mm	50mm	50mm	50mm	50mm
Saddle Width	155mm	155mm	143mm	143mm	143mm	143mm
Seatpost Length	100mm	125mm	150mm	170mm	170mm	170mm
Stack (Low BB)	614mm	613mm	622mm	632mm	641mm	650mm
Stack (High BB)	610mm	609mm	618mm	627mm	636mm	646mm
Reach (Low BB)	410mm	430mm	450mm	475mm	500mm	530mm
Reach (High BB)	415mm	435mm	455mm	480mm	505mm	535mm
Headtube Length	95mm	100mm	110mm	120mm	130mm	140mm
Headtube Angle (Low BB)	65°	65°	65°	65°	65°	65°
Headtube Angle (High BB)	65.5°	65.5°	65.5°	65.5°	65.5°	65.5°
BB Height (Low BB)	328mm	333mm	333mm	333mm	333mm	333mm
BB Height (High BB)	335mm	340mm	340mm	340mm	340mm	340mm
BB Drop (Low BB)	47mm	42mm	42mm	42mm	42mm	42mm
BB Drop (High BB)	40mm	35mm	35mm	35mm	35mm	35mm
Trail (Low BB)	126mm	126mm	126mm	126mm	126mm	126mm
Trail (High BB)	123mm	123mm	123mm	123mm	123mm	123mm
Fork Length (full)	550mm	550mm	550mm	550mm	550mm	550mm
Fork Rake/Offset	44mm	44mm	44mm	44mm	44mm	44mm
Front Center	724mm	746mm	770mm	800mm	829mm	863mm
Chainstay Length	432mm	432mm	432mm	432mm	442mm	442mm
Wheelbase	1152mm	1175mm	1200mm	1228mm	1268mm	1302mm
Top-tube Length (horizontal)	563mm	583mm	605mm	632mm	660mm	692mm
Bike Standover Height	730mm	734mm	744mm	749mm	757mm	757mm
Seat Tube Length	385mm	385mm	405mm	425mm	445mm	465mm
Seat Tube Angle (Low BB)	76°	76°	76°	76°	76°	76°
Seat Tube Angle (High BB)	76.5°	76.5°	76.5°	76.5°	76.5°	76.5°
Max Seatpost Insertion	220mm	220mm	240mm	260mm	280mm	300mm
Min Seatpost Insertion	80mm	80mm	80mm	80mm	80mm

About Us

Bikometry is a discipline focused on the science and art of understanding the geometry and linkage of mountain bike frames and their suspension systems.

This intricate field studies the angles, distances, and details that define a bike's performance on various terrains. Every aspect, from the head tube angle to the chainstay length, influences how the bike behaves.

Linkage, which connects the rear wheel to the bike frame, combined with the suspension, ensures smooth rides by absorbing shocks from the terrain.

By understanding bikometry, whether you're a designer, professional rider, or enthusiast, you can optimize bike performance, choose the right model, or even craft a custom bike. Dive into bikometry with us and explore the nuances that make mountain biking exhilarating.

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