BLACKBIRD +15mm Seat Foam VERTEX pistons are known for

VERTEX pistons are known for their performance and reliability over time

dual-purpose

Same reliability and performance of the original components

Take the new sprocket and place on hub ensuring a nice snug fit making sure the bolt holes are in position

BLACKBIRD +15mm Seat Foam VERTEX pistons are known forBlackbird Racing seat foams are produced in high density polyurethane, which does not absorb water and keeps its excellent qualities for a long time. They are made following the best world championship racing teams recommandations. They are easily interchargeable with the original ones. 1,5 centimeter higher than stock.