Trek-compatible seat mast cap.
"Lower weight and increase stiffness without the inherent drawbacks of fully integrated seatposts"
Read more"As well as saving weight, it can flex more than in a traditional system"
Read more"Trek took the extra step of making long and short seat mast tops available for personalized sizing"
Read moreIf for any reason you're not satisfied with a Bontrager or Trek aftermarket purchase, return the item, along with the original sales receipt to the original place of purchase within 30 days for an exchange or refund. Think of it as a 30-day test ride.
| Size | 135mm x 5mm | 135mm x 20mm | 175mm x 5mm | 175mm x 20mm |
|---|---|---|---|---|
| Length | 135mm | 135mm | 175mm | 175mm |
| Offset | 5mm | 20mm | 5mm | 20mm |
| Rail compatibility | 7mm round | 7mm round | 7mm round | 7mm round |
| Material | Carbon | Carbon | Carbon | Carbon |
