Stage 1-3 are O-tuning alternatives. We need your original cylinder in order to realize the following 3 tuning variants (Stage 1-3). At Stage 4, we will adapt a Quattrini topend from the PX range:

Stage 1 (10 HP):

Slight changes in timing, cylinder honing / drilling, machining of the Meteor piston supplied by us, matching mainjets for your original carburettor and a special box exhaust. The original crankshaft and cylinder head can be reused.
Setprice: 655€

Stage 2 (12 PS):

Changes in the timing, cylinder honing / drilling, machining the Meteor piston supplied by us, matching mainjets for your carburettor, Kingwelle (57 stroke), CNC cylinder head Veloce, clutch incl. pinion and spacer, Pinasco ignition and a special box exhaust.
Setprice: 1.790€

Stage 3 (14 PS):

Complete conversion to long stroke including all necessary adjustments:

Changes in the timing, cylinder honing / drilling / planning, machining the Meteor piston supplied by us, matching main jets for your carburettor, Kingwelle (60 stroke), CNC cylinder head Rapido, clutch incl. pinion and spacer, primary pinion, Pinasco ignition and a special box exhaust (transfer ports in the carter you have to adjust by yourself).
Setprice: 1.970€

Here you can see the bench results with the 3 versions for the GS 150 :

Here is an example of a customer engine that has built a GS engine with the components prepared and delivered by us:

14PS at 16Nm is a very remarkable achievement when using the original casting cylinder. Benny has also built a beautiful scooter:

Stage 4 (22 PS):

Quattrini conversion with adaptation of a M1XL cylinder on a long stroke CNC-Kingwelle crank including all necessary parts and adjustments: Kingwelle long stroke, works on carter, matching foot and head gasket, special long-stroke studs, modified intake manifold and shock absorber mount bracket, clutch, Pinasco ignition and clutch spacer, primary and clutch pinion .
Setprice: 2.460€

Here is the power curve of the Stage 4-tuning:


 

We are happy to build your motor based on the above shown kits. If you are interested, we will gladly send you an appropriate offer.