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Upgrade Kit Stage6 R/T 70cc Cylinder for 2.5mm inner cylinder head cap

Stage6 R/T Item no.: S6-75140UP72

Upgrade Kit Stage6 R/T 70cc Cylinder for 2.5mm inner cylinder head cap



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Data Sheet
Suitable for (31)


You are looking for an easy way to improve the performance of your Stage6 R/T cylinder? All you need is the upgrade kit suitable for your cylinder!

If you have, for example, a cylinder that comes with 2.4mm inner cylinder head cap, you choose the upgrade kit for this cylinder. It includes an inner cylinder head cap that reaches 4/10 deeper into the cylinder; this will be balanced with the base gaskets included in the delivery, so that the recommended squish band of 0.40mm remains unchanged. This simple modification raises the complete cylinder, and therefore also port timing.

If the cylinder has ~192° exhaust and ~127° transfer port timing out of the box, these will be increased to ~194° and ~130°. The result is a clearly measurable performance plus.

Also included in the kit is the spark plug (NGK nickel-alloy B-E10.5) we have listed as replacement part in the cylinder manual. Rarely has a spark plug convinced us like this; but thanks to this one, we’ve now managed numerous times to get a performance plus of a half hp on the dyno with different engines – simply by replacing the spark plug!

The flange included in the delivery has been conically machined off.

All in all, this is an amazing package that will boost your engine’s performance for a very fair price.

Tech tip: Using our port timing calculator, you can also (against our recommendation) choose another combustion chamber depth for your cylinder, depending on whether you want to raise port timing just a bit or a lot.

On the cylinder kit, next to the specification of the piston version (A, B, C), you will find which inner cylinder head cap is included.
Scope of delivery:
Inner cylinder head cap, base gaskets, spark plug, flange.
for 2.5mm inner cylinder head cap

Data Sheet

Name Upgrade Kit Stage6 R/T 70cc Cylinder for 2.5mm inner cylinder head cap
Item No. S6-75140UP72
Brand Stage6 R/T
Homologation No
Homologation Yes
Displacement 70cc
Stroke Original
Conrod Length Standard
Product Line Hyper racing
Material Aluminium
Bore 47,6 mm

Your product goes with the following manufacturers and their models:


SR 50cc Funmaster LC (after 07/2003) - Piaggio engine

SR 50cc LC (after 07/2003) - Piaggio Engine

SR 50cc R Factory i.e. LC (after 2005) - Piaggio Engine

SR 50cc R LC (after 2005) - Piaggio Engine

SR 50cc Racing LC (after 07/2003) - Piaggio Engine

SR 50cc Sport LC (after 07/2003) - Piaggio Engine

SR 50cc Street LC (after 07/2003) - Moteur Piaggio


Atlantis 50cc LC (after 06/2002) - Piaggio

GP1 50cc LC - Piaggio

GP 1 Open 50cc

GP1 Racing / Revolution 50cc LC - Piaggio

GP 1 Racing 50cc

GP 1 Replica 50cc

GP 1 Revolution 50cc


DNA 50cc LC

Runner 50cc LC (1999 - 2000)

Runner 50cc LC (after 2004)

Runner 50cc LC (before 1999)

Runner 50cc LC CAT (after 2001)

Runner SP 50cc LC (after 08/2004)


NRG 50cc LC

NRG Power DD 50 (after 2005)

NRG mc2 50cc LC (after 1998)

NRG mc2 50cc LC (before 1998)

NRG mc2 DD 50cc LC (after 1998)

NRG mc2 Extreme 50cc LC

NRG mc3 DD 50cc LC CAT

NTT 50cc LC

Quartz 50cc LC

Zip 2 SP 50cc LC

Zip SP 50cc LC

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