TRX 700XX (2008-2009) Stage 1: single-cam motor. Stage 1 has improved power at all RPM’s over OEM. Performs well with stock air box lid and exhaust. Uses stock valve springs and rockers. Uses stock auto-decompression mechanism.
TRX 700XX (2008-2009) Stage 2: single-cam motor. Stage 2 similar low end power to OEM cam and increased power above 5;000 RPM. Better suited for engines that have intake and exhaust modifications as well as mild engine modifications. Uses stock valve springs and rockers.
TRX 700XX (2008-2009) Stage 3: single-cam motor. Stage 3 specifically designed to utilize the extra breathing required by an engine that has an aftermarket exhaust system; air box modification; and possibly some engine modifications.