Questions and answers on the subject of motorbike conversions

BMW 2-Valve conversion
How does the price of an SE Concept Bike come about?

 
"Our Concept Bikes are fully reconditioned and completely rebuilt custom bikes, including rebuilt engine and transmission, which when completed are equivalent to the condition of a new motorcycle".

But what does that mean?
Engine and transmission are completely disassembled, crankshaft ground or lapped and rebuilt, connecting rods angled and rebuilt, oil pump completely replaced, timing chain, tensioners and tensioners new, cylinder heads converted to unleaded..... read more


 


  
BMW Bobber Concept Bike



What is the difference between a Twinshock Monolever Paralever

Here we look at all models from 1970 to 1996

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BMW Bobber Concept Bike

Specifications of the Twinshock Monolever Paralever models


Chassis


Here we look at all models from 1970 to 1996 

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BMW Bobber Concept Bike

Tyres for 2-valve conversions 


What fits and how do I get the tyres registered with the TÜV?


  

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BMW Bobber Concept Bike
TÜV rules


TÜV rules for motorbike conversion. What needs to be considered before the conversion, what are the TÜV rules for motorbikes and what is the best way to proceed.

  
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BMW Bobber Concept Bike

Shorten fork - lowering

How and why is the fork shortened on the two-valve BMW Boxer models to lower the forks 



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BMW 2-Valve conversionBMW GROUP CLASSIC

The BMW Classic Group website is by far the best site to get comprehensive information about BMW Motorrad models from the very beginning. Whether it's technical data, brochures or pictures, any thirst for knowledge is quenched here. On top of that, it is simply fun to browse through the old data and pictures. A real relief with all the electro-smog :-).


https://www.bmwgroup-classic.com/de/historie/historische-modelluebersicht.html