'87 FXR chassis geometry with '87 GSX-R1100 forks & triple clamps

Measured real trail of 118.58 mm (135.35 mm ground trail) and 0.21° of swingarm angle are a disaster. 28.82° steering head angle is only marginally better than the stock spec.

stock FXR chassis geometry

FXR chassis geometry with GSX-R forks & motolab triple clamps