Rotax Exhaust spring.

938-790

For Rotax 582 and 532 Exhaust System
Relaxed length: 59mm
Intended for 69mm exhaust system hook distance.

938-795

For Rotax 912iS, 912ULS, 912UL, 618, 503, 447, 377, 277
Relaxed length: 52mm
Intended for 62mm exhaust system hook distance.