MB - Clutch shims


When you rebuild your engine you do check the sprocket alignment don't you?

The amount of times I've seen or heard that a new chain has worn out in no time at all, when I question 'did you check the sprocket alignment'?

It's a relative easy job to do with the correct tools or with just a vernier gauge so there's no excuse to not set the sprockets heights and then your chain will last for a long time. These days it's not just aligning the rear sprocket but the front needs doing as well and we offer 3 sizes of the oil thrower washer to help out.


That's another first for Lambrettas from MB!

I was so fed up rebuilding engines using old and crap from Indian that we went out of the way to have hardened clutch shims made. Now we have a new set of clutch sprocket shims all marked with MB and the size. Not only have we had these precision shims made in normal sizes but we've gone that extra step further and made some slightly smaller and larger shims and we now make them in 0.1mm increments not like Innocenti who only did them in 0.2mm sizes.

Again another first from MB!



When anyone is rebuilding a clutch set up, we can not predict what size is needed. There are so many clutch and drive sprockets on the market and we do not know how well a casing is also machined. We offer all these shims individually but with the new ones which are marked we offer three sets

  • 'odds' - 0.9, 1.1, 1.3, 1.5, 1.7, 1.9mm
  • 'evens' - 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0mm
  • 'full kit' - 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0mm

I know they’re not cheap to buy a set, but it's the best way especially if your a dealer or you build your engine regularly. And now we've reduced the new kit prices to make them worth buying. So always check your chain alignment and remember it's all in the fine detail that MB specialise in.



















Mark Broadhurst any questions email mark@mbseriousoutdoors.co.uk