[Sofatester]

2,459 built.

BTW: In the very beginning BMW didn't know whether they should use a 190/50 or 190/55 rear tyre. They decided to take the wrong one, the 190/50. They also did not knwo whether they should use a 1:2,62 or 1:2,75 final drive unit. They took the right one, the 1:2,75.

But they didn't meet the needs and wishings of many customers to make the final drives interchangeable. They used at least 3 different ABS systems within the 1200 Boxer series and so the final drives had different sensors and different transducer gears that are incompatible when used in a bike with a different ABS system.

If you give the ABS a miss, you can use a different final drive out of the 1200series on your bike without problems, but if you want to keep the ABS working it's pretty much work: Changing the gears inside the final drive , built a transducer gear with the right measurements of the stock one and install it onto the gears to send the right signals to the ABS sensor of your bike.

The "long" 1:2,62 final drive (stock in R1200RT and R1200ST) doesn't make sense in a R1200S as long as the 12S isn't tuned heavily.
The strongest tuned R1200S bikes, like the one my friend "Rika" owns with REAL 152 hp DIN, need it and they accelerate much faster with the long 1:2,62 than a stock R1200S with the shorter stock 1:2,75 final drive does.

In Hockenheim down the long "Parabolika" the fastest, strongest R1200S race boxers reach ~ 268 km/h (measured by GPS, ~ 167 mph ) which is ~30 kmh (~19 mph) less than a stock S1000RR does there. A normal stock R1200S is limited to ~ 245 km/h (~154 mph).