30 Day Unconditional Guarantee
For Trek, Bontrager and Electra products, if for some reason you're not 100% happy with your purchase, you can return it within 30 days for a refund - no questions asked!
Manufacturer part # | 557045 |
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Steerer outer diameter | 28.6 mm (1-1/8") |
Crown race inner diameter | 39.8 mm |
Cup Insertion OD | 49 mm Top/56 mm Bottom |
Stack height | 9 mm |
Bearing type | Sealed |
Headset type upper | Unthreaded semi-integrated |
Headset type lower | Semi-integrated |
Material | Aluminium |