NOS Hirth 300cc/317 top‑end gasket kit—codes 54/190, 55/191, 56/193. Restores proper sealing, compression, and leak‑free performance on vintage 54R‑series engines. Includes top‑end gaskets and seal. Identifiers: ST‑1, SKU‑3, PIC‑2084‑Hirth.
300cc 317 Gasket Kit — 54R Engine Top End Vintage Snowmobile Skedaddler Moto‑Ski Boa‑Ski Polaris Snow Bug Ski‑Bee
$24.99
1 in stock
300cc 317 Gasket Kit — 54R Engine Top End Vintage Snowmobile Skedaddler Moto‑Ski Boa‑Ski Polaris Snow Bug Ski‑Bee
$24.99
1 in stock
NOS Hirth 300cc/317 top‑end gasket kit—codes 54/190, 55/191, 56/193. Restores proper sealing, compression, and leak‑free performance on vintage 54R‑series engines. Includes top‑end gaskets and seal. Identifiers: ST‑1, SKU‑3, PIC‑2084‑Hirth.