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STOCK SPECIFICATIONS: 39mm BORE X 41.4mm STROKE
10:1 COMPRESSION
FYI: Although externally similar
to the Z50, the Honda XR and CRF 50 internals are significantly different from the
Z50. No performance parts are readily interchangeable.
Chinese
and Taiwanese engines which are 'like Honda' design are not copies of the CRF or
XR. These engines share similarities to a variety of Honda engine designs,
but aren't the same as any ONE Honda engine.
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PISTON KIT - HIGH COMPRESSION 39mm
Piston, 13:1 Compression
This stock size kit installs
in your stock cylinder with no boring required.
INCLUDES: Piston, pin, rings,
circlips, headgasket, basegasket.
REQUIRES: Check clearances
before installation.
RECOMMENDATIONS: Bikes ridden
at or near sea level may run better with a mix of 1/2 race gas and 1/2
premium pump fuel.
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00325F H BORE KIT 50 HI COMP -- $140.00
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BORE
KIT 82CC 50mm
piston, 13:1 compression
A great increase in torque
and hp. Use with our Camshaft and thrust Chamber for even better power!
INCLUDES: Piston, pin, rings,
circlips, headgasket, basegasket.
REQUIRES: Honda 70 Cylinder -
NOT INCLUDED. Boring, rejetting.
RECOMMENDATIONS: Bikes ridden
at or near sea level may run better with a mix of 1/2 race gas and 1/2
premium pump fuel.
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00334 H BORE KIT 82CC -- $155.00
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CAMSHAFT - RACE GRIND -
BILLET
Camshaft, NO
CORE REQUIRED
Lift
.266” IN/.266” EX. Duration 210° IN/206° EX @.050”
This
new grind is specifically designed to give you the BEST power possible
for your Powrolled 50! An awesome increase in mid to top end power when
used with our bore kit. Also works as a race grind (top end power) with
our high compression piston.
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12755B H CAM XR50 -- $140.00
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CAMCHAIN - POWROLL
HEAVY DUTY
Stronger and less expensive than the OEM Honda
chain.
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18540 H HD CAM CHAIN MINI -- $20.00
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VENTED VALVE CAP
This Billet cap produces more
power by allowing the engine to vent excess crankcase pressure.
Reducing crankcase pressure
will allow your engine to rev higher and pull harder!
Choose Gold, Blue, Red or
Silver.
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18530 VENTED VALVE CAP -- $35.00
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