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Beta 390 RR-S MPG

1 Beta 390 RR-s have provided 565 miles of real world fuel economy & MPG data.
Click here to view all the Beta 390 RR-s currently participating in our fuel tracking program.

Beta 390 RR-Ss For Sale Nearby


Install a warm air intake.

Computerized engines maintain a narrow range of fuel mixture... ...

by GraeSack

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