Nucleus Classic Elite Valves & Guides

The Cylinder Head Shop designs and manufactures its own range of ‘Nucleus Sports Elite’ brand valves and guides. These are current available for the following models. Please contact us for details of stock, and requests for other models and custom designed items.

The Cylinder Head Shop

Since 1993, The Cylinder Head Shop (previously of Wimbledon), has established its name as a leading specialist in cylinder head tuning and repairs for motorcycle road and racing engines, and other vintage and high performance motorsport vehicles.
The Cylinder Head Shop first pioneered the market leading Serdi valve and valve seat equipment for demanding air-cooled, high-performance engines, and especially vintage …

Rolling Roads in the UK

Carb Settings and rolling roads, how to set your head up properly.
After having your head re-worked to high quality, close tolerances, setting up your head requires expert help re-jetting the carbs. This will add to its performance, clean running, emissions level and longevity. Injection systems also require re-calibration, but this is not quite as critical.

We recommend that you use a …

Setting up your Head Properly: Carburetion

After having your head re-worked to high quality, close tolerances, setting up your head requires expert help re-jetting the carbs. This will add to its performance, clean running, emissions level and longevity. Injection systems also require re-calibration, but this is not quite as critical.

We recommend that you use a rolling road with gas analysis equipment. In general, you will need …