FSA

Bearing ACB 1.5" 45x45 52mm MR170 Each

The FSA Bearing ACB 1.5" 45x45 52mm MR170 keeps your steering smooth, precise, and dependable—just the way it should be. Designed as a high-quality replacement bearing for FSA headsets, it brings back that crisp, confident front-end feel that every rider appreciates. Whether you’re rebuilding a road machine or tuning up a trail bike, this bearing helps eliminate play and friction for consistent performance ride after ride.

• Precision fit: Designed for 1.5" headset cups with 45x45° angles and a 52mm outer diameter
• Smooth performance: Quality sealed cartridge bearing resists dirt and moisture for long-lasting reliability
• Easy replacement: Restores proper headset function without the guesswork
• Trusted quality: Built to the exacting standards riders expect from FSA

Ideal for riders who want their steering to feel factory-fresh again, the FSA MR170 bearing delivers the smooth, solid performance that keeps every ride dialed.