A very large, solid and very efficient kit to be placed next to the aluminum TPR, in aluminum and high-end treatment, revised and corrected admission, diameter 47.6mm, finish worthy of the largest kits, cylinder head with high compression tapered polished chamber, in short , a concentrate of performances made in Italy. Having tried it a lot and sold it a lot, it is a really powerful kit, very torquey, also a lot of high speed, with good settings, a good squish (several base gaskets are also delivered), you will be able to reach really big performances.
The pack also includes a set of competition carbon valve slats to adjust the intake with the high engine. It is in piston pin of 10mm or 12mm to choose from, its piston is in hard chrome domed mono segment and adapted to the cylinder, we will be able to see the small preparation on the rear skirt and the maximum opening on the sides just below the rods of reinforcement. This kit will prefer the torque at high speed by its diagrams and its normal exhaust. If you want a very high speed and even more advanced kit, see the ATHENA 47.6mm aluminum racing version, there are also the special long stroke versions ... ATHENA takes up a huge place with products that are always less expensive, more efficient, clean, and a huge catalog. The RRD team has chosen this kit to cut the first step of the low-cost aluminum kits in part thanks to its quality and performance.
Technical characteristics:
Bore: 47.6mm
Compression ratio: 15.3: 1
Expected stroke: 39.2mm
Actual displacement 69.8cc
power: from 11 to 12hp depending on equipment and preparation
We recommend it with at least : 70cc racing exhaust, reinforced crankshaft and bearings, cold competition spark plug, minimum 21mm carburetion
the pack contains:
X2 carbon valve slats
X5 base gaskets
complete pack of reinforced joints
cylinder head d.47.6mm polished truncated high compression chamber
nykasil aluminum cylinder d.47.6mm special intake normal exhaust
single segment piston d.47.6mm
segment d.47.6 domed hard chrome
piston clips (G pin rings)
reinforced treated piston pin d.10mm or 12mm to choose from
As an option we offer a stage 1 preparation, this preparation is a modification of the channels and the exhaust port by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement to the piston and the bottom of the skirt is also included in this modification. Allow a little extra time for this preparation!
Mounts on :
APRILIA AMICO
APRILIA SR (before 1993 only)
FANTIC BIG WHEEL
CARELLI PONY
GARELLI SR
ITALJET BAZOOKA
ITALJET PISTA
ITALJET REPORTER
ITALJET SCOOP
ITALJET YANKEE
ITALJET ASCOT
ITALJET ASTRA
LEM FLASH
LEM GHIBLI
LEM TORNADO
LEM TORNADO SS1
KOTIR SR
KTM CHRONO
MBK BOOSTER
MBK BOOSTER NAKED
MBK BOOSTER ROCKET
MBK BOOSTER NEXT GENERATION (NG)
MBK BOOSTER CW
MBK BOOSTER SPIRIT
MBK STUNT
MBK TARGET
MBK BOOSTER TRACK
YAMAHA BW'S
YAMAHA BW'S NG
YAMAHA BW'S ORIGINAL
YAMAHA BW'S NAKED
YAMAHA CRZ
YAMAHA CT
YAMAHA SLIDER
YAMAHA SPY
YAMAHA ZUMA
And other models ...
