Hyosung GT250R rear sets?

[slipperymongoose]

I agree somewhat with the valving out of the box, but I must say that I would take adjustability, then work on the valving afterward. On mainstream bikes like Honda cbr, GSXR'S, the Yamaha R's out of the box have decent enough suspension that can be reasonably upgraded with a simple spring change. It's only when you get serious about your track days etc or hard street riding that you would then look into upgrading the valves etc on those particular ones. But back onto topic I wouldn't use the hyo forks unless they like u said burning came with adjustability. There's no point swapping for the sake of USD if its not going to give you more then what stock has.

[mustangGT90210]

Ghetto measuring says the sets will fit? I may have to be the guinnea pig...

[burning1]

I agree somewhat with the valving out of the box, but I must say that I would take adjustability, then work on the valving afterward. On mainstream bikes like Honda cbr, GSXR'S, the Yamaha R's out of the box have decent enough suspension that can be reasonably upgraded with a simple spring change.

That's fine for the suspension from a GSX-R or an R6, but not necessarily true for a budget suspension. Even if the GT250R has external adjustments, if the internals are conventional damper rods, it won't be worth a swap. Conversely, if there are no external adjustments but it has nice valving, it could be a huge upgrade for us.

[slipperymongoose]

Thing is a simple spring and pre load change is what most people here do and need but yes I agree. On the other hand there's not many budget suspension upgrades for our forks. Rear shock yes but front forks not much.

[burning1]

Understood. Pointing out what to look for in a fork swap.

[slipperymongoose]

 

[oz353]

and thats why i mentioned it.... to get you tech gurus talking about it. hopefully we can get some real answers about all of it soon. i did watch a "official review" on the gt250r, they dont linger on the subject of suspension for too long, however they do say that it is an overall good suspension. i also checked pricing for front end parts and they are relatively cheap.

now who is gonna be the guinea pig and pick one up so we can get some specs?

[crzydood17]

another aside that swingarm/wheel might be a good swap as they come from the factory with 150 profile tires.

[slipperymongoose]

Time will tell.

Another thing to consider is making sure that, that swingarm doesn't change the geometry of the rear at all such as the angle of the swingarm in relation to the ground. It's around 12 degrees ballpark figure and Suzuki would have spent a bit making sure this is spot on. You don't go messing with this stuff unless u really know what you are doing and what you want the bike to behave like. A fact I only recently just learned is that not all tyres are the same size (circumference) in a given category, e.g 180/55/17 aaand between manufactures. All of which affects the bikes geometry therefore handling.

[Banzai]

Took one for the team and test-fitted a Hyo GT650 rearset (identical to the 250) on my GS. The bolt spacing is actually about 3mm different so you would need to elongate one of the holes on the Hyo part. The Hyo left side also has the gear changer which is easy to remove. Not sure how fiddly it would be to adapt/connect the rear brake lever on the right hand side as we decided the rhs would be a bit too much to r&r for the exercise.


The Hyo sets the pegs back quite a bit on the lowest setting and the upper settings would have you folded up a bit more.

[crzydood17]

So just a slight bore out on the top and bottom with a dremel and they would fit? EXCELLENT! Not a super aggressive change but looks like it would be worth it! And you can do GP shifting now!

[gsatterw]

GP shifting is far superior in my book. Got it set up like that on my gs

[slipperymongoose]

Least we know now well done. Now also the aftermarket more adjustable rear sets would also be suitable. 

[burning1]

Considerations:

-- How difficult is it to attach the rear brake?
-- Does the Hyo shift linkage use the same thread pattern as a Suzuki linkage? If so, we might be able to keep the Hyo shift lever and install a suzuki knuckle. Would improve the ergos of the shift lever.

Really exciting discovery!

[Banzai]

I would only enlarge one hole (probably the lower one) on the Hyo bracket for strength/stability. I didn't really look at the shifter linkage but the Hyo uses an adjustable rod similar to a turnbuckle arrangement so at worst that would need to be replaced with a longer one or shortened and rethreaded (remember one end is reverse thread. Suzi is directly into the side of the gearbox so you would need to check the spline on the gearbox end for a match.

If you desperately want the Hyo-style adjustable rear set, yes it is do-able but there will be bit of stuffing around and for a lot of people a reduction in rider comfort.

[burning1]

It's useful for guys like me... Back and up is what you want on a race bike. If you want improved comfort, there are a number of manufacturers that offer drop-pegs which can fit the GS.

[Banzai]

I can definitely see the attraction for racing and having a position that is more like a sports bike.

[mustangGT90210]

They fit?  I know my next mod. I'll hold off until someone has put together the right side as well, but I'm really excited. I need sets that go farther back and up. My legs are dead cramped after an hour with clubmans on an otherwise stock bike

[average]

im sure after having the sets in your hands it d probably take about 2 beers and an hour to figure it out. Unless someting happens to my F2's, im stickiing with them....