This system was created for the low db race tracks in great britain, hence the gb . It will pass the strict requirements of tracks like donnington park, oulton park and castle combe. So obviously you will be able to run this system at silverston, rockingham. Our exhaust has a static (standing) measure of 98 db measured at max revs 50 cm from the tailpipe. The drive by (passing) measure is 102 db. power gains are + 25 crank hp / + 19 crank torque. The system will bolt up to the factory GT3 headers and includes a 200 cell x-torque design which diminishes db 's while increasing torque. The muffler is a lightweight free flowing design which includes a balance tube design to further decrease db 's but alleviates backpressure to create power. the exhaust tips can be swiveled 360 degrees to point away from the drive by testing point to allow you to enjoy the system at even lower db tracks! We must have more information on where the measurement is taken for lower passing measure readings than 102 db. All motorsport and racing parts are special order items. Special order items must be paid for in advance. Special order items are sold on a non-cancelable, non-exchangeable, non-returnable, non-refundable basis and do not carry any warranty. No exceptions.

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.