Athena S410195006020 Cylinder base gasket FR/RR .012"

Unlock Reliable Engine Performance with Athena S410195006020 Cylinder Base Gasket FR/RR .012"

Keep your bike running smooth and leak-free with the Athena S410195006020 Cylinder base gasket FR/RR .012". This gasket ensures a perfect seal between the cylinder and crankcase, preventing compression loss and oil leaks that can kill your ride. Designed for durability and precision, it’s an affordable upgrade that protects your engine and boosts reliability on every ride.

Features & Benefits of Athena S410195006020 Cylinder Base Gasket FR/RR .012"

• Thickness: .012" – optimized for precise sealing and proper engine compression
• Material: Multi-layer steel composite for excellent heat resistance and durability
• Fitment: Front and rear cylinder base compatibility for versatile use
• Brand: Athena – trusted by riders worldwide for performance parts
• Value: Cost-effective solution that extends engine life and reduces maintenance

Why choose Athena? This gasket’s advanced multi-layer design handles high temperatures and pressure without warping or cracking. That means fewer worries about leaks and more time on the road. Whether you’re rebuilding or upgrading, this gasket delivers a tight seal that keeps your engine running at peak power.

3.5" bore. .012" thick aluminum. Type A, Ø 94 mm 3-1/2" bore. Front/rear. 0.3mm (.012") aluminum. Type 'A'. OEM replacement reference 16774-86A. Type 'A' (early style) and type 'B' (late style) gaskets explained: There are 2 types of cylinder base gaskets for Evolution models available. For convenience sake we'll call them 'type A' (early) and 'type B' (late). *Type A' gasket was introduced on the 1984 Evolution Big Twin models, and can be used on all of the 84-99 1340cc Evo models and will follow the contours of the cylinder base perfectly. They will fit 86-22 Evo XL, but stick out at the cylinder base. This can be a problem with silicone beaded base gaskets. *Type B' gasket was introduced on Evolution XL Sportster models in 1986, and will fit all Evo XL models, but also all 84-99 Evo 1340cc models although the Big Twin cylinder base is a bit larger than the gasket. The 'type B' is the only gasket type that 'The Factory' supplied from 1986 onwards for both Evo Big Twin and Evo XL Sportster models. Both type 'A' and type 'B' have identical inner bore diameter, oil hole and stud hole locations. Gaskets for front & rear cylinder are identical. Only difference between the 'A' & 'B' gaskets is the outside perimeter.