XKR XJR S Type R and Range Rover Sport Supercharger Upper Pulley Kit G...
Upper Pulley Kit for XKR, XJR, Range Rover Sport
We are able to offer upgraded supercharger upper pulleys to fit Jaguar and Range Rover AJV8 supercharged cars. These items are CNC machined from the highest quality materials, produced to exacting standards, and available at competitive prices for our customers. Upper pulleys have been produced to give a 10% supercharger speed increase, equating to approximately 2.5psi boost rise, on 4.0 and 4.2 engines. For power increases, realistically, the upper will give 30-35bhp midrange and will give perhaps 15bhp peak increase at high rpm, due to the Eaton M112’s reduced efficiency at higher rpm. Either upper and lower pulley’s produces a significant power improvement and very noticeable increase in instant acceleration.
Our upper pulleys are made in stainless steel, turned to give a very smooth and aesthetically pleasing finish, and produced with a consistent .0002” / 0.005mm inner bore tolerance to ensure consistent and reliable shaft fitment. Unlike some aluminium versions of this upgrade, belt slippage is not a problem with these steel pulleys.
Fitment does require some material removal from the supercharger snout casting. This is achieved relatively simply with a rotary file or other hand tools. Overall the pulley change should take about 3 hours on XKR and early XJR models, but on S-Type and X350 models access in situ is difficult and some people prefer to remove the supercharger.
Special Offer Price of £139.75 + shipping and VAT
No UK VAT to pay if you live outside of the UK and EEC Countries
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