A full line of YS engines are held along with possibly the largest stock of spares in Europe, as well as servicing & rebuilding service.

The increase of other dealers in YS has necessitated an introduction of a consultancy fee to be paid for repair to engines not bought through Probuild. People are buying engines with no back-up service from retailers with no or little knowledge on how these engines operate. The fee will be £37.50 payable on receipt of the engine. All repairs will be paid for in full before the engine is dispatched to the customer.