Mack's Motorcycles proudly sells RHC Products
Honda CRF Performance Products
Our cylinder heads are CNC ported for quality control, to exact RHC specs, to ensure each head gives maximum gain and optimum flow numbers..All cylinder heads have been developed by Ron Hamp, through hours of flow bench, dyno, and race track testing. These heads provide the best single improvement you can add for horsepower and torque gains and should be the first step in building a winning engine.
CRF 250 Heads.......$1350
These heads can use OEM valves.
CRF 450 02-08.......$1350
The 02-08 heads require custom RHC exhaust valves to meet AMA Pro Rules.
The valves are $50 each.
CRF 450 09 EFI Heads.......$1350
These heads can use OEM valves.
Complete cylinder heads kits are available. These cylinder head kits include:
CNC ported head, 4 valves, RHC valve spring kit, stem seals, head gasket,
and all necessary hardware. These heads are completely assembled and tested,
ready to bolt on your Honda CRF.
2004-2009 CRF 250 Head Kit.......$1875.
2002-2008 CRF 450 Head Kit.......$1900.
2009 CRF EFI 450 Head Kit.........$1900.
RHC Valve Spring Kits.......$280.
RHC Custom Grind Cams.......$350.
Available for
2002-2009 CRF 450 and 2004-2009 CRF 250.
JE Pistons
2002-2009 CRF 450, 13.5-1 compression......$207.
2004-2009 CRF 250 14-1 compression.......$199.
RHC Performance Exhausts. Custom built to RHC specs.
Our systems are made to produce maximum HP, yet are
also quiet, 102db, without sacrificing power. Available
for 2003-2009 CRF 450.......$589.
-----------Kawasaki 2008 450---------
Heads, cams, pistons and exhausts are available
for the 2008 Kawasaki KX450F.
Similar pricing, please call for details.