Performance Engineering...
NSR-WORLD.COM Performance Engineering...

Available now!

"Performance Engineering" at NSR-WORLD.COM Performance Services!

Aggressive development over the last few years has enabled us to now offer a range of performance services and parts for your NSR250.

From a lightened flywheel to a full-race specification motor, and anything in between, we can now offer you the competetive edge on the street or track! We also offer engine building/re-building and crankshaft servicing.

NSR-WORLD.COM MC21 TT-FIII 74.7hp dyno graph!

We can also offer full dyno set-up capabilities to fine-tune your modifications and verify our own!!

Experience unparalled performance from your NSR250, at a fraction of the cost of some alternative solutions!

NSR250 bottom-end and crank rebuilds  NSR250 lightened flywheel   NSR/RS hybrid

Here is an example of some of the services and parts we can provide:

Crankcase cleanup and matched to cylinders: £ P.O.A
Crankcase machined internally to HRC F3 specification: £ P.O.A
Barrel deck height optimisation: £ P.O.A
RC Valve weld and regrind: £ P.O.A per cylinder
Port optimisation: £ POA (dependant on level of tune)
Crankshaft rebuild: From £300¹ + £25 assessment fee & bearings
Lightened flywheel (all models - exchange only) £ P.O.A (exchange only)²
Lightened sprocket carrier (MC18/MC21) £ P.O.A (exchange only)²
300 Head squish optimisation (increased peak power) £ P.O.A per head

  1. Crankshaft rebuild with customer-supplied bearings start from £400.
  2. Due to customers failing to return their original flywheel to us in the past, we will now only send out the lightened item once we receive a sutable stock part.