We’ll make this a great experience

It’s our mission to provide you with world-class hospitality every time you visit us online or in-store. We’ll always take care of you. It’s the Trek way.

Awesome free shipping options

All accessory orders over $49 ship to your home for free, and all accessory orders ship free to your local retailer for in-store pickup.

30-day Unconditional Guarantee

If for any reason you’re not 100% happy with your online order from trekbikes.com, you can return it in like-new condition within 30 days. No questions asked.

Learn more

Trek Madone 9-Series Upper Headset Bearing

Model W513538

Revive your Madone with a new upper headset bearing.

Product details

For use with 2016+ Madones
Durable steel bearing housing

Get all your favorite apparel from over 80 of the world's best cycling brands delivered right to your doorstep or local Trek retailer when you shop our curated online collection. If you're not 100% satisfied, you can return your purchase within 30 days for a full refund.

Shop all gear

Bearing size	48.9mm x 37mm x 6.5mm
Bearing type	Headset
Material	Stainless Steel

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, colors, materials, and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. Prices shown are manufacturer's suggested retail prices.

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

We’ll make this a great experience

Awesome free shipping options

30-day Unconditional Guarantee

Trek Madone 9-Series Upper Headset Bearing

Genuine replacement parts

Product details

All your favorites, all in one place

Product Compare Rack