Stage 6 Sport Pro 70cc Performance Cylinder Kit for Aprilia / Piaggio 50cc 2T Air Cooled Models


Looking for a high end street cylinder kit, that doesn’t blow the budget? This is the kit for you!

The MKII Sport Pro is the latest update on Stage 6’s extremely popular street range kit. It carries an impressive list of features for a very affordable price – such as fully aluminium cylinder and included head, single ring piston, and significantly increased ports with Stage 6’s new x6 intake transfer portmap design.

Please note that the factory exhaust will not fit on this cylinder (Nor should it be installed with it anyway).

In Stock at Euro Warehouse (Ships in 8-12 days)


Stage 6 Sport Pro 70cc Performance Cylinder Kit for Aprilia / Piaggio 50cc 2T Air Cooled Models

The first generation Sport Pro MK1 cylinders became very popular among scooter tuners, then Stage6 took things to the next level and introduced the successor, the Sport Pro MKII.

Paired with a good high end street exhaust, and an upgraded carb Stage 6 say that this cylinder it capable of figures up to 17hp! A stock factory Piaggio Hiper2 engine is bang on 4hp from factory, 17hp is a rocket ship.

We recommend installing this cylinder kit with a Stage 6 Pro Replica, or Tecnigas TRIOPS exhaust, as well as upgrading the carb to either a Dellorto PHBG19 or PHBG21 for optimum power.

The cylinder was completely redesigned; 6 instead of 5 transfer ports ensure optimized cylinder filling. The oval exhaust remained but was optimized as well. The appearance is based on the pentagonal shape of the R/T cylinders. The head is a one-piece unit with cast scavenging canals for better heat dissipation. The piston is a replica of the R/T piston, with a domed piston crown and 0.8 mm thick piston ring to optimise performance and improve thermal stability.

The cylinder delivers 2 to 3 hp more power than the MK1, between 14-17 hp, without any additional modifications and in combination with the corresponding components. Maximum performance and outstanding robustness – we are sure that this cylinder will set new standards in the tuning scene.

We recommend using a reinforced crankshaft, a min. 19mm carburetor and a sport / racing exhaust to exploit the full power of this tuning cylinder..

The kit includes.

  • aluminium cylinder, 47.6mm bore
  • 1-ring piston with 12mm piston pin
  • one-piece cylinder head
  • gasket set

We recommend to clean the engine before assembly, check the condition of all components and use a new spark plug and new small end bearing. Do not forget to change your carburetor settings if necessary.

Squish clearance should be between 0.75 and 0.85. The cylinder should be run in for approx. 300 km with a 1:33 mixture to improve robustness and life expectancy.

Attention: Original exhausts cannot be mounted with this cylinder.