The KW suspension will be installed in December.
Upgrading the suspension and brakes are always wise. We have not found the need for brake modifications on this 135 even at these power levels. The stock brake set-up is awesomely THAT good. I have tested five 335s and two 135s braking power and found the 135s much sharper and firmer. However, Rennzport do recommended for those that want for street use; that extra bite :
1. Install performance brake pads (About $200 front & rear)
2. Install teflon brake lines. These make the brakes much firmer, sharper and confident. (About $130)
3. If you spend more time on the track than the street; consider a full upgrade brake kit with rotors, brake pads & performance brake fluid and sensors (About $550 and topend $ 1,500). These prices exclude the brake calipers especially if you want the 6 piston calipers!!!