a three chamber pipe recommended for SH .21 off road engines that delivers balanced low/mid/high speed power delivery, with a gusseted stinger for improved durability. This is the complete tuned pipe, with manifold, ...

Manifold Assembly. Package includes two long exhaust springs and one exhaust gasket. This is the manifold included with the O.S. B2101 Ty Tessmann Edition Engine (OSM1A203). This manifold features the same width ...

Assembly. COMMENTS: Longer manifolds such as this one allow the main needle valve in the carburetor to be set lean for lower fuel consumption, but the needle adjustment becomes more sensitive. Care ...