An Inlet Manifold for fitment to the Toyota 4AGE DOHC Engine, TIG welded in aluminium and fully internally ground to ensure optimum flow and performance.

The runners on this manifold are to suit the Yamaha R1 carburettor spacings (Please check your carbs are spaced 77mm - 79mm - 83m prior to purchasing this manifold). All of our manifolds are designed to mount the carburettors at the correct angle to ensure the floats function correctly in their bowls. Ideal for anyone who has already sourced a set of Mikuni R1 carburettors for their 4AGE project. Both large and small port versions are available, please specify when ordering.

Please advise port size when ordering. For reference large port engines have 65mm wide ports, small engines have 50mm wide ports. If the port size is not specified we will supply a large port as this is most popular. A re-stock fee will be charged if a manifold needs to be changed however.

Manifolds come complete with coolant connections (where applicable) as standard and a brake servo connection on the runner nearest the gearbox. Please use the check box options to specify the number of vacuum connections you require (servo connection will be supplied with a blanking plug if the manifold is specified without).

This item is made to order, therefore please allow 10 working days for dispatch.

Bike carburettor tuning services.

danST Engineering are pleased to be able to offer bike carburettor diagnostic and set-up services using our in house chassis dynamometer (rolling road) based in Shipley, West Yorkshire. Please drop us a message to discuss your requirements.