Hotcams
Hotcams Camshaft Yamaha 4089-2IN
Stage 2 intake: Dual cam motorAdded top end over stage 1Uses stock valve springs
Improved peak torque and upper 1/2 RPM horsepower.
Same low RPM torque as the stock cam.
Stock valve springs are OK.
Supplied with decompression mechanism.
Hotcams
Stage 2 intake: Dual cam motorAdded top end over stage 1Uses stock valve springs
Hotcams
4165-2IN and 4166-2E when used as a set provide increased mid-top torque and horsepower. Produces more power than the OE cams from 6000 rpm and up with a slight loss at lower rpm. Produces more power...
Hotcams
Dual-cam motor: intake and exhaust cams sold separately. Excellent top-end power increase and good over rev. Exhaust cam includes auto-decompression mechanism. Uses stock valve springs.
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