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How many inches should I lower in the front and rear for street riding?

6.2K views 47 replies 21 participants last post by  crudmoe  
#1 ·
How many inches should i lower my bike in the front and rear. I'm 5'7 only and only lowered it .75 on the front but they tell me that if I lower it too much on the rear that it can affect my bike for the curves is this true ? if you guys know whats the perfect setting for a guy my height and that doesn't affect my bike for curves I would appreciate your help and its for street riding.
 
#6 ·
I've thought about this recently as well. I know a lot of people are against it, but like he posted, it's just for street riding. I guess if you don't really ride THAT hard, then lowering it a bit won't be a big deal. Unless you really push your bike to it's limits, which I know I don't. I'm thinking of doing an inch in the ft, and .75 in the back.
 
#8 ·
If you lower it evenly it shouldn't change turn in, it should only change clearance when leaned over.
If you lower just the front or the front more than the rear it should turn in faster but be a little more likely to head shake.
 
#10 ·
And when you say evenly is that 1 to 1?
So far where ppl talk about lowering it's been .75 in the front and 2 or 3 in the rear. This doesn't sound even to me. Is there a ratio front to back to "keep it even" Does that even make sense?
 
#17 · (Edited)
Rake and trail both change when altering ride height, lowering forks in triples or raising/lowering the rear. All of which factor in to handling.
Has anyone actaully measured the wheelbase of a lowered bike compared to stock ride height? For a slammed bike, you might be surprise to find it is a bit longer than stock (1395mm vs 1422mm for mine). While you are lowering the front only, it steepens the angle, but when you lower the rear, it has the opposite effect and brings it back to the same angle. The swingarm is already down from the pivot, but when lowered, it is level with the pivot which lengthens it (ever wonder why your chain gets TIGHTER when you compress the suspension?).


Pulling up the forks to lower the front, decrease the rake (steeper angle) and shortens the trail due to the increased angle of the rake. WHile this does sharpen up steering, depending on suspension, tires and such...it can have a negative effect on stability. Raising the rear ride height also does the same thing. This can help you understand some of the terms and such...http://www.carbibles.com/suspension_bible_bikes.html

What one perceives as bad handling to one person, another may not even notice.

I'd still like to know just how lowering a bike will cause the forks to bottom out.
 
#20 ·
Rake and trail both change when altering ride height, lowering forks in triples or raising/lowering the rear. All of which factor in to handling.
Has anyone actaully measured the wheelbase of a lowered bike compared to stock ride height? For a slammed bike, you might be surprise to find it is a bit longer than stock (1395mm vs 1422mm for mine). While you are lowering the front only, it steepens the angle, but when you lower the rear, it has the opposite effect and brings it back to the same angle. The swingarm is already down from the pivot, but when lowered, it is level with the pivot which lengthens it (ever wonder why your chain gets TIGHTER when you compress the suspension?).


Pulling up the forks to lower the front, decrease the rake (steeper angle) and shortens the trail due to the increased angle of the rake. WHile this does sharpen up steering, depending on suspension, tires and such...it can have a negative effect on stability. Raising the rear ride height also does the same thing. This can help you understand some of the terms and such...http://www.carbibles.com/suspension_bible_bikes.html

What one perceives as bad handling to one person, another may not even notice.

I'd still like to know just how lowering a bike will cause the forks to bottom out.
thanks for the input.

based off of this. I am going to do the 1" all around. Won't know how it feels to me until I try. I know I ride well, but I also know that I do not take this bike any near it's limits. I would feel so much more comfortable if I could get my foot down at stops.

As it relates to the chain I imagine this is a simple adjustment of the rear wheel?
Thanks for all the imput.
 
#31 ·
The reasons have been posted by fiveoh and sss_r1 to name a few. It will negatively affect the handling of your bike.

Before lowering I suggest you check your sag numbers. Then I'd recommend if lowering to lower the absolute least amount. But... your bike, your payment etc. :dunno
 
#26 ·
None.

You only need one foot on the ground to hold the bike upright. If you haven't got the confidence, and need both feet, perhaps you shouldn't be on a bike like an R1 to start with.

I've seen plenty of guys (and girls) shorter than that on sports bikes, and they don't lower them. They'd rather keep the handling as it should be.
 
#29 · (Edited)
well since i dont want to create another one of these threads since there seems to be like billion of them..i will jus ask here...lol..Im planning on lowering my 09 r1 atleast an Inch in the rear just for looks since later it will get a slight extension for some drifting as well...should i lower the front as well? and if so how do i lower the front?
 
#41 ·
From what I've seen, the 09 actually likes to ride tall. First find a good suspension setting at stock height and work from there before dropping an inch in the front. That is a HUGE change and probably far more than needed unless you are doing this because you're not tall.