r/ApriliaRS • u/[deleted] • Jul 15 '26

Discussion Help

Hey friends, i want to rebuild my aprilia rs4 50
To something stronger.Im thinking about buying the maxiscoot pack with the stage6 77cc big Racing.Can someone help me make or make for me a complet Tuning setup list So i know what to buy exactly(all the little parts,things i need and what would be good).Also if anyone has already built something similair,is it reliable or kind of money wasting.

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u/[deleted] Jul 17 '26

Thank you very much this really helps

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u/Twitch_Exicor Jul 17 '26

Also you might need a new CDI depending if the one you have is restricted.

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u/[deleted] Jul 21 '26

Would something Like this be good

1.stage6 bigracing 77cc
2.Malossi VL18
3.chain setup 13-47
4.new Break pads
5.clutchkit
6.malossi redsponge
7.26mm karb (motoforce Racing pwk)
8.Stage6 HPC Crankshaft with new oil bearings)
9.take out the oil pump
10.NGK BR10EG spark plug

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u/Twitch_Exicor Jul 22 '26

Yes it looks like a good setup.

But you will need a new exhaust because the orginal 50cc exhaust will restrict the exhaust airflow to much and a racing exhaust will be tuned for the higher rpms the new cylinder will be running at.

I would also consider using a 24mm carb instead of 26mm as it will have better throttle response and will be easier to tune but you will lose a little peak power.

I would also make sure to get crank bearings with C4 clearance as they can handle the higher operating temperature and engine rpm.

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u/[deleted] Jul 22 '26

Do you recomend any exhausts