Hi all,

In various race series/classes, are there preferred/mandated front brake hose routes?

For example: two lines from the Mcyl to the calipers.

One line from the Mcyl to the right caliper, then a jump over the fender.

One line to a "T" at the fork then a line to each caliper.

Do WSB/MotoGP bikes use a particular style? Why?

Chris

I'm not sure about mandating routes, but most aftermarket kits don't really give you an option.

I'm no physics guy, but I've always been partial to Two lines from the MCL to calipers. Most (I think) aftermarket kits are this way, at least all of the ones that I've come across.

It makes sense if you think about it. The stock lines on my 600RR were first to the right caliper and then a jump over to the left and I always thought that one would naturally have more pressure than the other would.

just my .02

One can't have more pressure than the other.

The reason to jump across the fender is to save $$$ on brake hose. Takes less hose to run a shorter distance, only one hose all the way up the bars. Theoretically, if the hose has any "give" then shorter total hose length will "tighten" the feel. If you run two hoses to a tee, or all the way to the cylinder, you have more hose to buy, and more hose to "give" under pressure.

As for the original question, no clue if one system or another is mandated. looking at the AMA rulebook, it says that hoses and fittings may be modified or replaced from original equipment, but makes no requirements.

^^ Who uses brakes? There's the problem![kidding Nic]

I'm with the "keep the lines as short as possible theory". To my knowledge, brake lines are to be installed in a professional workmanship manner. Beyond that, tech will only look for leaks and safety wire.