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BMW Performance Products
| Carbon-fibre inlet ducts for BMW R259 models .... and soon for other
fine sports machines.
A simple device which provides considerable performance and economy gains, particularly when used with an aftermarket exhaust and a suitably tuned chip. Available now for the R1100RT, R1100S, R1100RS, R1100R and R1100GS.
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MotorWorks have been signed as UK distributor
For North American orders and enquiries, please email lennie@boxer-performance.com For European orders and enquiries, please visit
Australian Dealers:
All other enquiries please email
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R1100S Dynojet performance graph with and without ducts. |
This graph is for the development R1100S belonging to Boxer
Performance's principal, Lennie.
It compares the bike in standard tune, at 2500kms, with its current state of tune using the InDuct intake duct, new cam grind and advanced cam sprockets (to improve the low and midrange power delivery), and after-market exhaust which has had internal welds ground out to remove restrictions. This bike also has gas-flowed cylinder heads and an Epicycle VariReg adjustable fuel pressure regulator. We have spent many hours testing and tuning each change on the dyno and on the road to match and maximise the benefits of the component parts. |
R1100S with standard and InDuct manifolds |
This chart shows the development R1100S at the then current state of
tune with the stock duct compared to the same state of tune with only a
change to the InDuct intake duct.
The dyno results do not reflect the full benefits of on-road performance which result from the extra airflow and resultant pressurisation of the airbox. |
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R1100S Vanderlinde comparison |
Dyno results of two different R1100S machines, one fitted with the much talked about Vanderlinde exhaust and chip and the other fitted with the Staintune exhaust and FIM chip. There is a difference of about 8 degrees Celcius in these runs. There is no base run on the S fitted with the Vanderlinde system to compare to the base runs from the standard Staintune bike. This will give an idea as to the comparison between the two pipes and chip combos. While the Vanderlinde delivers more peak hp, the Staintune and chip deliver better midrange. As I mentioned on the Pelican BBS I have heard a lot, and now see the results. I am quite surprised that the Vanderlinde combination produces the top end that it does. |
R1100RT comparison graph |
This graph compares the unmodified R1100RT and the same bike with with
the InDuct intake duct fitted.
The dyno does not truly reflect the actual on road gains. This bike with stock exhaust and just the InDuct fitted was able to keep up with, and better, an R1100S fitted with a Staintune and InDuct. Both machines were two up and loaded with rally and camping equipment. The test was done with a top gear roll on from 130-180kmh. The R1100RT, according to the owner, gained an advantage of 3 bike lengths over the R1100S at 180kph. |
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