Lambretta Tune, TS1/Monza/Imola, stage RT, labour only, MB


This the labour price to tune a standard TS1 cylinder.

Inlet, exhaust, transfers, transfer feeds and boost ports are widened, raised, altered and flowed.

With no welding we regularly see 36bhp with a full race spec pipe.

32bhp with Franspeed and JL4 pipes.

28 - 30bhp with our touring Dev-Tour pipes.

We have even seen 28bhp with our MBgm Clubman exhaust.

This is a mix of our good old stage 1, 2 and 3 tunes which can be uprated to the all round Race-Tour tune and has become our most popular tune.

This can be used with any carb and exhaust

To find out more read the tabs below.

If you are interested please call the shop for details on 01709 869756.

Lambretta Tune, TS1/Monza/Imola, stage RT, labour only, MB

£ 205.85
Price: £ 171.54 Ex Vat

Further Information required

Contact Shop


  • More power.
  • Smoother running.
  • Modified port timings.
  • Widened port widths.
  • Increased cylinder head compression.
  • Lightened flywheel.
  • V-Force reed valve conversion.


  • Increased power spread.
  • Increased top end speed.
  • Increased low down power.
  • Can be done to existing tunes.
  • Can give up to 37 horse power with no welding.
  • Produces a smoother power spread than the RB cylinder.
  • Produces more power than the RB cylinder.
  • Can be used with any carburettor.
  • Can be used with any exhaust.
  • Can be used with any 58 or 60mm crankshafts.
  • Can be used with 62 or 64mm crankshafts but require much more work.

Development History

  • Mark Broadhurst has probably tuned and machined more Lambretta cylinder barrels and heads than anyone else.
  • This development and history of tuning has been put into our latest reed valve type cylinder tuning.
  • Many months of Dyno development have improved our already excellent Stage 1, 2 and 3 tuning.
  • Our Race-Tour tune works better than any of the Stage 1, 2 or 3 tunes.

Reasons to Buy

  • Long term reliable and powerful porting specs.
  • Can be used with standard or performance carbs from 28 - 38mm.
  • Ideal Road-Race tuning or as a Touring tune.


  • Change to the Race-Tour light weight piston.
  • Use a Race-Tour crankshaft.
  • Use a lightened flywheel.
  • Use a MRB Inlet manifold.
  • Use a modified V-Force reed valve for best spread, but keep an eye on reed petals.
  • Use Yamaha reed assemblies for long distant touring engines.
  • Use the Race-Tour 6 plate clutch for the extra power increase.
  • Use between 19 - 15 degrees ignition timing.
  • Use a Dev-Tour exhaust for low to mid end power.
  • Use around 5.0:1 to 4.80:1 for touring pipes.
  • Use our Road cylinder head for a low to mid range tune.
  • Use a 1.5mm head gasket to set up a low to mid range tune.
  • Use a Franspeed, JL4 or NK race pipes for top end power.
  • Use around 5.20:1 to 5.0:1 gearing for high revving pipes.
  • Use our Road-Race cylinder head for a mid to top end tune.
  • Don't use a head gasket for a mid to top end tune.

Reviews ( 1 )


5 star 1. Steve c 21 May 2014 

had the rt touring tune done,happy is an understatement,,cheers mark

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Questions? ( 2 )

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John s on 25 Aug 2013 asked "is any more work needed on this tune if running a 60/110 crank?and what head would you recomend?thanks"

MB Scooters Ltd replied: Same tuning work, ideally you need a decent head, we would use the BGM CNC head. Match and flow the inlet manifold and use a Yamaha block with packer.

Paul d on 10 Aug 2013 asked "does the barrel need to be replated once the tune has been done and does it include modifying the inlet to use bgm/rd reed valves?"

MB Scooters Ltd replied: It depends on the plating, we've done some with no problems and others where the plating flakes. There's different cylinders, the latest ones I believe use the Yamaha style block anyway

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