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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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BORE KIT - 80cc
80cc 49.5mm Piston, 8:1
Compression
This kit bores into a stock
Honda 70 cylinder and give a great overall horsepower increase of at
least 30%.
INCLUDES: Piston, pin, rings,
circlips, headgasket, basegasket.
REQUIRES: Honda 70 Cylinder -
NOT INCLUDED. Boring, rejetting.
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#00005N
$160.00
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BORE
KIT -
OVERSIZE FOR 80CC KIT
80cc +.020", 50mm Piston, 8:1
Comp.
INCLUDES: Piston, pin, rings,
circlips, headgasket, basegasket.
REQUIRES: Boring of 70
cylinder. |
#00005NB
$160.00
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100cc BORE & STROKE COMBO
50mm
Bore, +9.5mm Stroke, 11:1 Comp.
More than a 70% increase over
stock hp. Excellent torque and midrange power.
INCLUDES:
● Stroker:
Powroll Tough Rod Assembly: Rod, pin, needles. Work done on your crank.
● Piston Kit: Piston, pin, rings, clips,
headgasket, basegasket.
REQUIRES:
● Honda 70 Cylinder &
Head (not included with kit).
● Boring.
● Rejetting.
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Send in your crank for modification. Download our
Stroker Booklet
for details.
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#00006R-16000RA
$550.00
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PISTON KIT - OVERSIZE FOR 100cc
+.010” Oversize for 100cc Kit
Shown Above
50.25mm piston, 11:1 compression
INCLUDES: Piston, pin, rings,
circlips, headgasket, basegasket.
REQUIRES: Boring. Only
for use with Powroll Stroker (shown above). |
#00006RA
$175.00
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CAMSHAFT - PERFORMANCE GRIND
HARDWELD
CAM, NO CORE REQUIRED
Lift .238” IN/EX Lift
An awesome increase in mid to
top end power with our bore kit, and an overall increase in power with
the 100cc bore and stroke combo.
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#12601N
$195.00
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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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