Standard valve springs reach only 85 kg. FVD-motorsport-springs have up to 105 kg! The desired value for race-engines is max. 104 kg! The electronic spring scales is recommended to check the spring force. That is a need for optimally calculation of the valve spring mounting-lengths.example: length with 104 kg + lifting = mounting-length of the valve-spring.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.