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Engine-gpx-latest-update-zs155
Engine-gpx-latest-update-zs155

PITBIKE MADE IN ITALY

Engine-gpx-latest-update-zs155

Brand: AYRTON XTREMA
Product Code: ay75
Shop Code:
Availability: In Stock
Prezzo online: 448.96€
Ex Tax: 368€
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INFO Engine-gpx-latest-update-zs155

MAIN FEATURES OF THE NEW VERSION:

High compression head

Decompressor

0.7 mm cylindrical squish

8.00 mm Race Camshaft

Close change with first long and second short

Variable advance ignition

Keeping in mind that the standard versions have a 56mm dome head and a 1.6mm squish cylinder (which involves a compression ratio of 8.9: 1); it is possible to visibly appreciate the best performances of the NEW VERSION, in fact the ZS155 gpx 2.0 engine is fitted as standard with the small 53.0 mm dome head and a cylinder with squish reduced to 0.7mm; this solution brings the compression close to the ratio of 11: 1 ensuring greater power, torque and readiness of the engine in increasing revs. It also adopts a race camshaft with increased lift, from 8.00mm (compared to 6.7mm of the standard camshafts), the decompressor integrated in the head and a functional 6-disc clutch, strong, precise and very soft when activated. The equipment is completed by the digital ignition with variable advance and the gearbox with close spacing (first long and second short): 1 = 2.62 2 = 1.71 3 = 1.353 4 = 1.05

against standard spacings: 1 = 3.272 2 = 1.937 3 = 1.353 4 = 1.05

TECHNICAL SPECIFICATIONS:

CRF standard frame attachments

KLX intake and CRF exhaust

Effective displacement 155.43cc

Bore and stroke 60x55

Internal oilfilter

Intake valve 28mm, exhaust 23mm

4-speed manual transmission (N1234) close spacing 1 = 2.62 2 = 1.71 3 = 1.353 4 = 1.05

6-disc clutch in oil bath

Starting with gear engaged

4 pole ignition with external rotor

Variable advance control unit

Candle Ngk

Power 15.9hp / 9500 rpm

Maximum torque 10N.m / 5500 rpm

Dimensions 435x285x235

8.00mm race camshaft

Starting with gear engaged

4 pole ignition with external rotor

Variable advance control unit

4-stroke engine, 2 valves, horizontal cylinder

New "Daytona Style" crankcase

Cartridge oil filter

Digital control unit

Intake manifold connection klx

Crf muffler attachment, therefore compatible with the original exhaust of all PitBikes, unlike the previous version which needed an exhaust with klx attachment.

SUPPLIED:

- Kick Starter lever - Gear lever - manifold gaskets


Scheda Techinca: ay75
Engine-gpx-latest-update-zs155

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