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CT90 1991 & LATER
CT90 1982-1990
CT90 1960's Thru 1981
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FYI: This late model CT 70
shares many of the same internals as the CRF/XR 70. Although not
everything is interchangeable, many parts do match.
Chinese
and Taiwanese engines which are 'like Honda' design are not copies of the CT, 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 -
49.5mm piston, 11:1 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: 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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00320 H BORE KIT 49.5MM -- $155.00
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OVERSIZE FOR 80cc KIT
SHOWN ABOVE - 50mm
piston, +.020" O/S for kit shown above, 11:1 compression
INCLUDES: Piston, pin, rings,
circlips, headgasket, basegasket.
REQUIRES: 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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00320B H BORE KIT 50MM -- $155.00
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STROKER WITH NEW ROD ASSEMBLY 9.5mm -
100cc’s with our 49.5mm Bore Kit
Incredible torque and awesome
overall power increase. Gain another 40% more hp over the bore kit
alone!
INCLUDES:
Powroll Tough Rod Assembly: Rod, pin, needles. Work done on your crank.
REQUIRES:
Send in your crank for modification. Download our
Stroker Booklet for
details.
RECOMMENDATIONS: Works best
with Powroll pistons. Modifications may be required if using other
piston or cam brands.
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16050RA H STROKE XR70 WITH ROD ASSY -- $375.00
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CAMSHAFT - RACE GRIND -
BILLET, 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
comp. piston.
Uses stock bearings - not
included.
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12746B H CAM XR70 BILLET -- $140.00
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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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HEAVY DUTY CAM CHAIN
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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BORE KIT 80CC
- 49.5mm piston, 11:1 compression
A great increase
in torque and hp.
INCLUDES:
Piston, pin, rings, circlips, headgasket, basegasket. REQUIRES: Boring,
rejetting.
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00329 H BORE KIT 80CC -- $155.00
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STROKER 9.5mm -
98cc’s with our 82cc Kit
Incredible torque and awesome
overall power increase. Gain 40% more hp over the bore kit alone!
INCLUDES:
Powroll Tough Rod Assembly: Rod, pin, needles. Work done on your crank.
REQUIRES:
Send in your crank for modification. Download our
Stroker Booklet for
details.
RECOMMENDATIONS: Works best
with Powroll pistons. Modifications may be required if using other
piston or cam brands.
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16000RA H STROKE 50-70 -- $375.00
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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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POWROLL HEAVY DUTY CAM CHAIN
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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BORE
KIT 82CC - 50mm piston, 11:1 compression
A great increase in torque
and hp. We recommend our Camshaft and Oversize Exhaust system with this
kit for the best overall performance!
INCLUDES: Piston, pin, rings,
circlips, headgasket, basegasket.
REQUIRES: Boring, rejetting.
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00006R H BORE KIT 82CC --
$160.00
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PISTON KIT -
OVERSIZE FOR 82CC - 50.25mm piston, 11:1 compression + .010” Oversize for 82cc kit
shown above
INCLUDES: Piston, pin, rings, circlips, headgasket, basegasket.
REQUIRES: Boring, rejetting.
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00006RA H BORE KIT 82CC
+010 -- $160.00
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STROKER WITH NEW ROD ASSEMBLY 9.5mm -
100cc’s with our 82cc Bore Kit
Incredible torque and awesome
overall power increase. Gain another 40% more hp over the bore kit
alone!
INCLUDES:
Powroll Tough Rod Assembly: Rod, pin, needles. Work done on your crank.
REQUIRES:
Send in your crank for modification. Download our
Stroker Booklet for
details.
RECOMMENDATIONS: Works best
with Powroll pistons. Modifications may be required if using other
piston or cam brands.
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16000RA H STROKE 50-70 -- $375.00
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CAMSHAFT - PERFORMANCE GRIND -
HARDWELD
CAM, NO CORE REQUIRED
Lift .238” IN/EX Hardweld cam
on a new stock core. This mid-to-top end camshaft is a great addition to
any engine from a stocker to the big Bore & Stroke combo.
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12601N H CAM 50-70 -- $175.00
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POWROLL HEAVY DUTY CAM CHAIN
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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