P10227: FSAE Variable Intake
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Product Concept 2

Variable length intake runners have also been implemented in production motorcycles, namely the Aprilia RSV4 Factory, and the Yamaha R1 and R6. All three use a two position runner, in which a section at the end of the runner is disconnected at a specific RPM, creating a shorter runner. Both Yamaha and Aprilia report that the variable runner results in a broader powerband.

Aprilia RSV4 Factory Picture 1

Aprilia RSV4 Factory Picture 2

Aprilia RSV4 Factory Picture 3

Aprilia RSV4 Factory Picture 4

R6 Pictures

R1 Pictures