Black GPR V1 Steering Damper with fitting kit to fit RR4/5/6/7 (enables you to change direction easier at higher speeds/wide throttle openning) comes with resister that requires wiring in place of the servo (saves you having to break your OEM damper to fit) £180 + p&p
Blessing in disguise really, as I won one on ebay day after, 6 month old hyperpro acros tank style for 62 quid!