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SHOP ONLINE
Powroll
13840 Commercial Lp
Crooked River, OR
97760
Mail:
PO Box 920
Redmond OR 97756
Phone
541-923-1290
Fax
541-923-5637
Email
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STOCK SPECIFICATIONS:
39mm Bore x 41.4mm Stroke
10:1 COMPRESSION
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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 - STANDARD SIZE
SUPER HIGH COMPRESSION
39mm Piston, 15:1 Compression
This stock size kit installs in your standard cylinder -- no boring
required. Legal for most 'stock' mini classes. Single best
performance mod you can do (without going bigger on displacement).
INCLUDES: Forged
piston, pin, rings, circlips, headgasket, basegasket.
REQUIRES: Check
clearances before installation. Under 2,000' elevation, run 100+ Octane.
Over 2,000' elevation, Premium Pump OK.
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#00360
$150.00
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PISTON KIT - STANDARD SIZE
HIGH COMPRESSION
39mm Piston, 13:1 Compression
This stock size kit installs in your stock cylinder with no boring
required.
INCLUDES:
Forged piston, pin, rings, circlips, headgasket, basegasket. REQUIRES: Check
clearances before installation.
RECOMMENDATIONS: Bikes ridden at or near sea level may run better
with 100 octane fuel.
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#00325F
$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 100 octane fuel.
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#00334
$165.00
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CAMSHAFT - RACE GRIND
Lift .266" IN/.266" EX. Duration 210° IN/206° EX @.050"
Billet Camshaft,
no core required.
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
comp. piston. Uses stock bearings - not included.
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#12755B
$150.00
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CAM CHAIN -
POWROLL HEAVY DUTY
Stronger and less expensive than the OEM Honda chain.
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#18540
$30.00
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