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Cylinder -POLINI 70 cc Alloy- Minarelli AC (vertical) - BOOSTER, BUMP50, BWS50, SLIDER50, SPY, SR50 (-1994), STUNT, ZUMA50, AMICO

P1660079
Cylinder -POLINI 70 cc Alloy- Minarelli AC (vertical) - BOOSTER, BUMP50, BWS50, SLIDER50, SPY, SR50 (-1994), STUNT, ZUMA50, AMICO
Cylinder -POLINI 70 cc Alloy- Minarelli AC (vertical) - BOOSTER, BUMP50, BWS50, SLIDER50, SPY, SR50 (-1994), STUNT, ZUMA50, AMICO
Cylinder -POLINI 70 cc Alloy- Minarelli AC (vertical) - BOOSTER, BUMP50, BWS50, SLIDER50, SPY, SR50 (-1994), STUNT, ZUMA50, AMICO
Cylinder -POLINI 70 cc Alloy- Minarelli AC (vertical) - BOOSTER, BUMP50, BWS50, SLIDER50, SPY, SR50 (-1994), STUNT, ZUMA50, AMICO
Cylinder -POLINI 70 cc Alloy- Minarelli AC (vertical) - BOOSTER, BUMP50, BWS50, SLIDER50, SPY, SR50 (-1994), STUNT, ZUMA50, AMICO

Description


The POLINI 70cc ALU is the entry in the world of Polini aluminium cylinder kits.

The Polini 70 ALU is cast in the finest and thermally preferable aluminium and covered with a hard Nikasil coating. The ALU offers the finest racing technology. Amply dimensioned channel cross sections and sporty control times let it turn to over 11.000 rpm with the right components. The outlet layout has been trimmed to maximum slot width with the very attractive sawtooth technology. The ?teeth in the outlet prevent the piston rings from threading into the outlet channel.

Thanks to the thermally clearly superior aluminium, which emits the heat much better than grey cast iron, the ALU can be compressed higher and tuned more crisply.

With such speed orgies, the larger carburettor and a racing exhaust with a short resonance length is of course obligatory. The necessary tuning work is then rewarded with a speed bullet, which easily cracks the 10,000 mark.
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€278.90 *

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General
performance class: sport
Gudgeon pins
diameter: 10 mm
Spark plugs
thread type: M14x1,25
thread spark plug: short
heat rating NGK: B9HS
Cylinders
displacement: 68 cm³
bore: 47 mm
engine type: 2-stroke
type of cooling: air cooled
material: aluminium
material piston cylinder surface: Ceramic
cylinder head inclusive:
cylinder gasket set inclusive:
number of transfers (incl.boost ports): 5
number of boost ports: 1
shape exhaust port: single port (toothed)
exhaust mounting: flange
flange type: 2 studs
exhaust bolt pitch: 48 mm
thread exhaust studs: M6
Crankshafts
stroke: 39.2 mm
Pistons
number of piston rings: 1
production method piston: cast
Piston rings
piston ring type: common ring
thickness rings: 1,0mm
Circlips
circlip type: double G-type
wire size of circlip: 1,0mm
Cylinder heads
cylinder head type: one piece
OEM numbers (for comparison purposes only)
Polini P1660079, 1660079, P166.0079, 166.0079
Please inform me once the product is available again.
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The POLINI 70cc ALU is the entry in the world of Polini aluminium cylinder kits. The Polini 70...Continue reading

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