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Racing Cylinder POLINI by SIP

177cc for Vespa 125 VNB/GT/GTR
1°/Super/150 VBA/VBB/T4/GL
/Sprint 1°/Super 1°,
Ø 63,0mm, cast iron, 2 ports,
stroke 57mm, 2 piston ring(s),
with cylinder head,
3rd port closed with spacer

FOR RACE USE ONLY

The King of the 177cc class. POLINI sets the standards with this old school classic, the one all cast iron cylinders have to measure up to.

At the plug and play level, this is a powerful cylinder, and with a 60mm long stroke crankcase, can reach 187ccm - incredible! 7 powerful transfers with a triple boost port feed the cylinder. A generous exhaust port and solid ASSO pistons create a solid support.

Power plus starts in the lower ranges. No problems here with changing up gears. With a longer transmission can operate well as a touring cylinder. If you like, the 20mm carburetor can be replaced with the big brother 24/24 SI, and at least, mount a racing shaft. More power and dependability can be yours by adding combustion chamber and compression optimized MMW MALOSSI cylinder head and the GRAND - SPORT 177ccm piston. A larger racing exhaust, carburetor up to 30mm and a modified outlet will pump up your performance even higher, max around 125 km/h, and bring tears to your eyes.

Conclusion: Robust, hefty torque cylinder for daily use. An absolute all-rounder.

 

Cast Iron/ 63mm Bore/ 7 Transfers/ 177.68ccm

Cast iron cylinder, 57mm stroke, 7 transfers, piston with 2 thick piston rings, original POLINI cylinder head included in delivery, compression 10.6:1, delivery includes set of gaskets. Jets and ignition should be adjusted. The motor casing should be modified to fit the larger cylinder transfers.

 

SIP-TIP: W4AC spark plug, ignition timing approx. 17-19°, HD SI 20/20 105-110 are a must, carburettor SI 24/24 or 28-30mm, Italian/SIP/J racing exhausts, longer transmission, light flywheel/Vespatronic and race/long stroke crankcase are recommended, full circle /flowed crankshaft and 30mm reed valve carburettor to bring tears to your eyes on the freeway.

 

SIP-customer Gerhard J., Austria:

"Absolute optimal, drives like a dream on long distances."

 

SIP-Man Matze:

"Drove the 177er, 28er and Sito Plus 4300 km from Landsberg in Bavaria to Greece. The cylinder took everything in stride, not a single problem!"

 

 

A powerful, high quality alternative to the more usual 2-transfer port cylinders available are our reworked OE PIAGGIO VESPA PX125/150cc cylinders, as well as the even more powerful 2-port version of the 177cc cylinders produced by POLINI and DR. The boost ports of these cylinders have been sealed and the transfer of fuel gas is provided by the ports of the same name, located on both sides of the bore. No further modification of your crankcase is necessary for immediate use of these cylinder kits, making them the ideal plug and play tuning option for all VESPA 125 VNB/GT/GTR/150 VBA/VBB/GL/Sprint/T4 and Super models. If your crankshaft has a bush, instead of a bearing at the small end, it will also need replacement.

Conclusion: Attractively priced cast iron cylinder, ideal for your daily runabout. If you wish, this cylinder can easily be further tuned with the addition of a 24mm carb, a reworked inlet port, a race crankshaft and a SIP Road exhaust.

 

SIP-TIP: For added power and reliability for your touring setup a race crank, expansion chamber exhaust, 24mm carb and an electronic ignition kit from VESPATRONIC can be included.

 

Robert Kremer, ScooterandSpareparts Kissing, November 2011:

"I built this reworked POLINI 2-transfer cylinder into a scooter for one of my customers. He is more than happy. The scooter accelerates strongly and is also very reliable over long distances. A more than adequate alternative to the PINASCO version."


Customers also searched for this article with:  race cylinder, performance cylinder, race cilinder, tuning cylinder


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$214.94
Art.No.
14000890
3,250g / piece
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fits on the following articles
divider Productname divider Art. No. divider Price divider Stock
Tuning Kit POLINI Sport 177cc for Vespa 125 VNB/GT/GTR1° /Super/150 VBA/VBB/T4/GL 10102000 $520.71
icon scootermodels This product fits the following models
  VESPA
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
VESPA 125 (T2/125) (D) 125 VNB1-6 2T AC `59-`65
VESPA 125 GT / 125 Sprint 125 VNL1-2 2T AC `61-`73
VESPA 125 GTR 125 VNL2T 2T AC `68-`78 -> 138956
VESPA 125 S 125 VNS1-6 2T AC `59-`65
VESPA 125 Super 125 VNC1T 2T AC `65-`69
VESPA 150 150 VBB1-2 2T AC `60-`67
VESPA 150 150 VBA1T 2T AC `58-`60
VESPA 150 (T4/150) (D) 150 VGLA-B 2T AC `59-`65
VESPA 150 GL 150 VLA1T 2T AC `62-`64
VESPA 150 Sprint 150 VLB1T 2T AC `65-`74 -> 105199
VESPA 150 Super 150 VBC1T 2T AC `65-`79 -> 328128

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