Scorpion EXO Optima Jacket 2018 Bore cylinders to nominal diameter

Bore cylinders to nominal diameter +/- 0

Light to heavy riders can fine-tune ride preference

Hidden breather is O-ringed at the heads and exits out the mouth of the injector/carb to provide efficient engine breathing

while the streamlined tapered front improves the rider's reach to the ground

valve springs

Scorpion EXO Optima Jacket 2018 Bore cylinders to nominal diameterOPTIMA JACKET HI VIS MD 100% waterproof breathable laminate riding jacket with direct core ventilation Waterproof breathable laminate outer fabric is fully seam sealed Double zippered center front to prevent leaks Two waterproof zippered direct core ventilation vents on upper torso Two rear exhaust vents on lower back Ample use of NightViz reflective on torso and arms for increased nighttime visibility Waterproof napoleon pocket in upper torso, two