Moto Guzzi Rear Drive Seal Large Most Big Twins 90417085 98.5029.40 O-ring is part number 90706170

O-ring is part number 90706170

Throttle side has larger inside diameter to accommodate throttle tube

but do not have adjustable rebound damping

Mille GT 2

Moto Guzzi Rear Drive Seal Large Most Big Twins 90417085 98.5029.40 O-ring is part number 90706170Moto Guzzi Rear Drive Seal Large Most Big Twins 90417085 Premium Viton seal. A less expensive non Viton seal is also available. It's part # 90407085. Most big twins. Will not fit CARC models. Sold each. Consult your parts manual for proper fitment. Please note that this item may be a reproduction or replacement item for an original Moto Guzzi part. Part number is for reference purposes only. Happy to combine shipping with other items. Items usually