All Balls Seal-SA 21-27-5 - No. 40-4153

The All Balls Seal-SA 21-27-5 (No. 40-4153) is a high-quality front fork seal designed for reliable performance on Yamaha WR/YZ 250F and 450F models. This part keeps oil inside the fork and ensures consistent damping, even in rough off-road conditions.

• Type: Front fork seal with size 21-27-5, reference No. 40-4153
• Color and material: Black rubber/plastic compound for durability and low friction
• Compatibility: Fits Yamaha WR/YZ 250F and 450F models from 2009–2023
• Brand quality: All Balls is known for specialized fork parts and precision components
• Ease of installation: Simple replacement that fits the existing fork setup without custom tools
• Performance benefit: Helps retain oil, prevents leaks, and protects the fork from contamination

With this seal, you’ll maintain the optimal functioning of your front fork: less oil loss, better damping, and reduced risk of wear to internal components. Ideal for riders who regularly ride off-road routes, trails, and practice sessions on Yamaha WR/YZ 250F and 450F, and who are looking for a reliable maintenance solution without compromise.