Differences between 4xv and 5jj carbs

All R1 1998-1999 4XV questions and discussions specific to this model should be posted here.
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Moise
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Bike Make & Model: Yamaha R1 4xv
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Differences between 4xv and 5jj carbs

Post by Moise »

I've been interested in this since Jompy posted how his 4xv runs better with 5jj carbs. Then the Sept. PB had an article about improving the fuelling…login to view the rest of this post


"You don't get slower with age, you just get more cautious." Michael Rutter

1999 4xv in blue
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