Banshee Athena 421 4mm Stroker Conversion 68mm Wiseco Pistons Top End Redo Kit
Top end parts needed to convert your Athena 392cc big bore to a 421cc stroker
Wiseco 68mm forged pistons (Pair)
Nitrite coated piston rings
Chrome wristpins
Circlips
Billet 24cc custom cut stroker domes (Pair)
Cometic top end gasket kit
Cool head O-ring kit
Heavy duty wristpin bearings (Pair)
Works with a 4mm stroker crankshaft
Runs on pump or race gas
No case or head mods required - THROW OUT THAT SPACER PLATE TOO!
BPRATV - The Best Parts. The Best Performance. The Best Price.
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573M06800, 10-301, B1005, B0627020F, B0627012F, IR019018AFM, PD909