The Bontrager Comp 31.8 stem is Blendr ready and provides a secure and confident connection to 31.8 handlebars for road, city and mountain bikes.

Product details

6061-T6 cast body construction
4-bolt dual band clamp retains stiffness and reduces weight
An opposing 2-bolt steerer tube clamp with M5 corrosion-resistant steel bolts
Blendr-ready for seamless accessory integration
Compatible with Blendr Comp & Legacy Elite bases and mounts, sold separately
Suitable for use on road, city or mountain bikes
Safe for use on carbon steerer tubes and handlebars.

Size	7 deg. x 60mm	7 deg. x 70mm	7 deg. x 80mm	7 deg. x 90mm	7 deg. x 100mm
Rise	7 deg.	7 deg.	7 deg.	7 deg.	7 deg.
Length	60mm	70 mm	80 mm	90 mm	100mm
Steerer outer diameter	28.6 mm (1-1/8")	28.6 mm (1-1/8")	28.6 mm (1-1/8")	28.6 mm (1-1/8")	28.6 mm (1-1/8")
Clamp	31.8 mm	31.8 mm	31.8 mm	31.8 mm	31.8 mm
Type	Threadless	Threadless	Threadless	Threadless	Threadless
Accessory compatibility	Blendr	Blendr	Blendr	Blendr	Blendr
Material	Aluminium	Aluminium	Aluminium	Aluminium	Aluminium
Weight	137g	154g	168g	183g	199g

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.

Weights are based off pre-production products at time of publication. Weights may vary in final production.

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