Does jacking the back up work

When ever i see adverts for shorter dog bones to jack the back up,they sap how it sharpen the front up and make it handle better.
Do racers use them and does it work or is it a sales ploy?

[yorkie_chris]

Yes they work.

It sharpens steering angle, reduces trail makes it easier to flick it about. Can overwhelm the weedy front end though unless you've got some more suitable springs in it.

[dizzyblonde]

or on the other hand, it jacks the back up and makes it steer too sharp into corners....not nice and IMO absolute shi!!te. Which is why i ripped the jack up kit off my black Sv when I bought it. If you want it to handle better invest in good tyres, good shock and good springs with oil to suit

[yorkie_chris]

It's personal preference, and the jack up kit alone doesn't make that much difference.

Bear in mind though it weights the front end. 2" difference in ride height might compress the front another inch, giving a MAJOR difference in handling.

[dizzyblonde]

Exactly with personal preference. Not everybody has two SVs to compare like I do

GSX-R Front end, Raising dogbones and a 180/55 rear section. Bob's your uncle fanny's your aunt. That was absolutely perfect for me, got a nice quick flick when I needed it. The dogbones aren't the best place to start with upgrades for cornering, but hey, I'm doing that too if my current SV needs it, then putting the Busa shock in.

Originally Posted by yorkie_chris

It's personal preference, and the jack up kit alone doesn't make that much difference.

Bear in mind though it weights the front end. 2" difference in ride height might compress the front another inch, giving a MAJOR difference in handling.

Very true that.

[yorkie_chris]

Once again to reiterate: Sort the front spring rate out first!

I've already got a gixer 1000 rear shoch ready to fit, I am going to buy some Avon Storms at the bike show.
How do i find out what rate front springs i need?

[dizzyblonde]

ahh well if your going to do the lot at once then you'll see the most benefit. If you still ain't happy then decide if a jack up kit is worth it...you don't say how tall you are, but that had a bearing on my decision to rip them off the bike too. I an't tiny, and my legs are as long as a 6ft bloke but it made for awkwardness at traffic lights etc