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Racing Cylinder D.R. "Formula"

75cc by SIP for Vespa 50 1°
Serie,
Ø 47,0mm, cast iron, 6 ports,
stroke 43mm,
with cylinder head,
cylinder base turned for V50
1° series

FOR RACE USE ONLY

This is where the real tuning starts! Anyone who thinks that DR only offers solid all-rounders is wrong. The DR 75 FORMULA UNO is a thoroughbred sport tourer that compares well with those from other tuning manufacturers.

6 transfer ports with an amply dimensioned, boost port divided in two supply the cylinder, the coated pistons with 2 windows and lubrication hole on the boost port ensure substantial support. In addition, all DR cylinders are painted black for protection against corrosion and better heat dissipation.

Conclusion: Good-value sport tourer – the right choice for anyone who is looking for a balanced price-performance ratio but does not want to do without quality and performance.

Advice: On the subject of the DR 75 FORMULA UNO one still frequently reads and hears “with additional exhausts“ and “10 transfer ports“. In the meantime, however, DR has changed the cast shape: additional exhausts are a thing of the past and the cylinder never had 10 transfer ports. What is true is that the current version is a powerful DR FORMULA UNO cylinder, without additional exhausts and with 6 transfer ports.

 

Cast iron/ 47mm bore/ 6 transfer ports/ 74.60cc

Cast iron cylinder, stroke 43mm, 6 transfer ports, coated piston with 2 piston rings, 6mm exhaust studs, original DR cylinder head included in delivery, compression 10.7:1, incl. gasket set. Jets must be modified. Fits all Vespa 50/PK/XL/XL2 models, except PK automatic. Transfer ports match the originals, casing must not be modified.

 

SIP-TIP: Adjusting the main jet and a new spark plugs is a must. Transmission recommended here is at least the PINASCO pinion or a 3.72 transmission. The engine is made even sportier by a 16/ 16 carburetter, original exhaust with wider manifold or the SITO Banana.

 

SIP-Community User "mulin":

"For a 75 kit, the Formula provides good performance and is also very durable. Mine has done 3,000 km up to now without any problems and there is not a single scratch on it.”

SERIE PRO also manufactures cylinders for Vespa 50 1° Serie V5A1T -> 92876. We've modified them so that they fit the first 50's Vespas with their smaller cylinder base connection in motor block.


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


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$109.72
Art.No.
10011100
2,300g / piece
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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 50 / N 50 V5A1T 2T AC `63-`71 -> 92876, 1. series

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