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STOCK SPECIFICATIONS: 57mm BORE X 48.8mm STROKE 9.5:1
COMPRESSION
FYI:
The 1986-1996 model DR125 shares many components with the more modern DRZ125 -
the Powroll products listed below are designed for the DRZ, but will work for
the '86-96 DR.
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143cc BORE KIT
61mm Piston, 12.5:1 Compression.
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CHECK OUT THE DOME ON THAT BABY!
Comparison of our 00331F (on the left) high
compression with the 00331S lo-comp. |
If you’re only
doing one modification to your 125, this is it!!
Single best
bang-for-the-buck available. High compression is the key to great
increases in torque and hp seen with this kit.
Our new piston
design is made in America from premium forgings. CNC lightened for the
same weight as the low compression piston. Use with our Camshaft and
Thrust Chamber for even better power.
INCLUDES:
Forged piston, pin, rings, circlips, headgasket, basegasket.
REQUIRES:
Boring. Rejetting. Must run race gas 108 octane or better.
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00331F S BORE KIT
143CC HI COMP -- $275.00
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143cc BORE KIT
61mm
Forged Piston. 11:1 Compression.
This lower
compression piston is the one we use with our stroker crank for the
170cc kit. Used alone, it will give the engine a small boost in
torque and midrange power. Horsepower increase with this lower
compression piston is about 10%.
Made in
America from premium forgings.
INCLUDES:
Forged piston, pin, rings, circlips, headgasket, basegasket.
REQUIRES:
Boring. Rejetting.
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00331S S BORE KIT
143CC 11:1 -- $150.00
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170cc BORE & STROKE COMBINATION
61mm Piston. 9mm Stroke. 13:1
Compression.
This kit gives
the DR awesome torque and midrange power. Pair it with our cam for power
from the basement to the moon!
INCLUDES: Bore
kit: Piston, pin, rings, circlips, headgasket, basegasket. Stroke work
done on your good stock crank assembly.
REQUIRES:
Boring.
Send in your crank for modification. Download our
Stroker Booklet for
details.
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00331S-16086 S BORE-STROKE 170CC -- $410.00
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CAMSHAFT - RACE GRIND
BILLET CAM, NO CORE
REQUIRED
This new grind
is specifically designed to give you the BEST power possible for your
Powrolled 125! An awesome increase in mid to top end power.
Uses stock
valve springs.
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12616B S CAM 125
RACE -- $150.00
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CAMSHAFT - MIDRANGE GRIND
BILLET CAM, NO CORE
REQUIRED
This grind was
designed by the Powroll R&D guys to work perfectly with our 143cc bore
kit. More midrange and top end power without losing the excellent torque
characteristics of the bigger bore.
Uses stock
valve springs.
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12615B S CAM 125
MIDRANGE -- $140.00
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