rek Full Suspension 12x21x8mm Heavy Contact Sealed Bearing

The Trek Full Suspension 12x21x8mm Heavy Contact Sealed Bearing is a genuine Trek replacement bearing designed for full suspension mountain bike systems.

It is used in frame pivot points to ensure smooth movement, precision and reliability even under the heavy loads generated by modern MTB riding.

The Heavy Contact Seal construction provides advanced protection against dirt, mud and water, helping maintain long-term performance and durability. 

Key features

• Original Trek full suspension bearing
• Size: 12 x 21 x 8 mm
• Heavy Contact high-protection sealing
• Designed for MTB pivots and linkage systems
• High resistance to dirt and moisture
• Smooth performance under load
• OEM Trek replacement part

Performance and durability

The Heavy Contact seal helps reduce contamination from external elements, protecting internal grease and minimizing wear over time.

The bearing construction is designed to withstand the high forces generated by modern MTB rear suspension systems, ensuring smooth and precise suspension operation.

Trek states that these are the same bearings used in original factory bike assembly. 

Compatibility

• Trek full suspension MTB bikes
• Suspension systems using 12x21x8 mm bearings
• Rear linkage and pivot points

Technical specifications

• Brand: Trek
• Type: sealed suspension bearing
• Size: 12 x 21 x 8 mm
• Seal: Heavy Contact Seal
• Material: steel
• Use: MTB full suspension
• Trek part number: W5256341

Why choose it

• Genuine Trek OEM replacement
• Advanced protection against external elements
• Long-lasting off-road durability
• Smooth and precise suspension movement
• Ideal for MTB pivot and linkage maintenance