Easybikeparts IS41 - IS51 Integrated Headset – Trek Road Bike Compatible

Upgrade Your IS41–IS51 Headset with Easybikeparts Full Complete Headset

Upgrade your ride with the Easybikeparts IS41–IS51 Full Complete Integrated Headset, designed for precise steering, long-term durability, and smooth, confident performance. Precision-machined from high-grade 7075 alloy, this headset delivers an ideal balance of strength and lightweight efficiency—perfect for modern road bike setups.

Designed specifically for IS41–IS51 integrated head tubes, this headset is compatible with many Trek road bikes that use a 1-1/8” upper and 1.5” lower integrated bearing system. It provides consistent handling, easy installation, and reliable performance whether you’re replacing worn bearings or refreshing your bike’s front end.

Key Features

• Perfect Fit: Precision-engineered for IS41–IS51 integrated head tubes
• Trek Road Compatibility: Fits many Trek road bikes with 1-1/8” upper / 1.5” lower setups
• Premium Quality: Machined from 7075 alloy for exceptional strength and reduced weight
• Smooth & Responsive Steering: High-quality sealed bearings for precise, controlled handling
• Complete Replacement Kit: All essential headset components included

Important Information – No Crown Race Required

This headset does NOT include a crown race and does not require one.

• Designed for forks with a built-in (integrated) crown race
• Common on many modern Trek road bike forks
• Ensures correct bearing fit without additional components

👉 Note: If your fork requires a removable crown race, this headset is not suitable. Always confirm your frame and fork specifications before purchase.

What’s Included

• Upper Bearing (IS41)
• Lower Bearing (IS51 – 1.5”)
• Compression Ring
• Dust Cap
• Micro-Adjustment Spacers

Ride with Confidence

Choose Easybikeparts for a precision-engineered integrated headset that delivers smooth steering, dependable durability, and confident control—ideal for high-performance road bikes.