STK Performance Camshafts & Valve train Products are exported Worldwide. Using Chilled Cast & Machined Billet methods to produce Performance Camshafts with a 12 Month Warranty.

A Member of the Motor Industry Workshop Association (MIWA).

John Dirker engineering provide a wide variety of services which include: -Reconditioning of a variety of all diesel and petrol engines -Expert camshaft grinding (light and heavy duty) -Re-boring of cylinders (light and heavy duty) -Resizing and shortening of con-rods -Fitting of all makes of small end bushes -Reconditioning of all types of petrol and heavy duty diesel cylinder heads as well as pressure testing of all types of petrol and diesel cylinder heads -Line boring of all types of petrol and diesel cylinder heads -Pressure testing of all types of petrol and diesel cylinder heads ( heavy duty cylinder heads under high temperature 95 degree bar air pressure for 40 minutes -Line boring of all types of petrol and diesel cylinder blocks -Crankshaft grinding of all types of petrol and diesel light and heavy duty crankshafts (especially heavy duty crankshafts -Reconditioning of diesel fuel pumps and injectors we have recently upgraded the injector pump diesel section ...