Lambretta Clubman exhaust sports version (Big box) Silver, bgm

MBGM0915

The MBgm Big Box Sports Clubman designed by Mark Broadhurst.

This is an updated version with a external silencer hung under the engine.

Suits Oval flanged cylinders.

This clubman with the oval flange will fit the following cylinders

  • Standard Cast 
  • Race-Tour
  • Rapido
  • SR/KA
  • Factory kits
  • Casa
  • Avanti (requires the fins modifying)

To order this seperately (for TS1/Monza cylinders etc)  please order MBGM0392

Comes complete with;

  • 1 Oval flange
  • 1 Oval exhaust gasket, MB
  • Main swan neck bracket
  • Rear tailpipe adjustable bracket
  • Fasteners for swan neck bracket
  • Exhaust springs (2 x 60mm and 2 x 50mm)
  • Spring hook tool for ease of fitment


These are painted silver.

Read more 



Lambretta Clubman exhaust sports version (Big box) Silver, bgm

£ 292.67
Price: £ 243.89 Ex Vat



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Questions? ( 6 )

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Cedric G on 20 Feb 2024 asked "hello MarK, I have the RT225 phbh 30 and the BGM V4 on my SX200 replica; everything works very, very well but I would like to install the sports version (Big box) ; will there be a performance gain compared to the V4 and if so could you quantify the gain in BHP? thank you "

MB Scooters Ltd replied: Depending on the engine spec but a Sport should give 1-3bhp more across the rev range and improves the md range dip on the V4

Paul on 14 Sep 2023 asked "I have a MBGM Clubman V3 and was looking to upgrade to this. Do you have a dynograph to compare how they differ. I looked on your tech articles and found you've designed an expansion to look like a clubman with underneath silencer and over the top silencer. Was this the finished article or are you still designing a new exhaust?"

MB Scooters Ltd replied: Sorry no dyno graphs to show but tested many times, the V4 Sport works around the same as a V1, 2, 3

Colin t on 08 Sep 2023 asked "Hi I am thinking of building a rt 230 would this exhaust be the best option for this kit,and is there less clearance underneath,thanks Colin."

MB Scooters Ltd replied: Yes perfect for the kit, just avoid speed bumps

Trevor on 19 Jun 2023 asked "I have a standard RT 195 top end and want to add this exhaust. What size carb do you recommend with this set up?"

MB Scooters Ltd replied: You could use the 25mm Dellorto if using the air box or a 28mm Dellorto to find more power

John on 26 Apr 2022 asked "Hi Mark, What mm size is this. Is it a 48/50mm ? RT225 kit used 90% of time in town. Would you recommend a 42 or a 48/50mm exhaust? Thank you"

MB Scooters Ltd replied: These are 50mm which finds the power spread. If you want just town work then the AF UNI standard tailpipe version is best, but noisy. Next is the Scootopia Clubman as an all rounder but less power than the MBgm versions

Dave on 01 Aug 2021 asked "Hi, would this exhaust work well on a 198 mugello, probably a 30mm carb"

MB Scooters Ltd replied: Yes should work fine



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