KOSO Signus X 4 Type 5 Type BWS-R BWS125 BIG Size Intake Pipe Hose Air Duct
Fitment
Signus X 5 Type/B8S
Signus X 5 Type/B2J
Signus X 4 Type/BF9
Signus X 4 Type/2UB
BWS-R 2JS
BWS125 SEA6J
Fitment
Genuine Throttle
KOSO Big Throttle 11.0, 12.6, 13.6, 14.2 inches (28, 30, 32, 34, 36 mm)
Large diameter intake pipe for big throttle.
Adapter is included, so it can work with all the throttles in one place.
An essential part for large air cleaner or throttle