[SparkyMJ]

I am intrigued. Any suggestions on the com/reb and preload settings you used? Did you find the adjustment range to suit the 300 well, or did you have to max/min out some things to get it to feel good?

-Mike

 

[jjmaine]

I don't remember which settings I used but I know I set it to oem settings and did not end up straying far from it. Maybe 1 turn on rebound and 1/2-2/4 on high speed compression. I'll know more when I get my other one back that has been re-valved specifically for use on the 300. The biggest difference with the Gsxr600 and Ninja 300 when it comes to the shock is the linkage ratio (and not the weight difference between bikes) according to Traxxion Dynamics. I would think the new valving will be changed with that in mind. Then again I have no clue what they'll do lol.

The adjustments work well, meaning it's adjustable but I'd be surprised if it is optimal for the Ninja 300. Much better than the stock shock though...

If you want the best bolt on shock you can get for as little money I'd go for the Racing Bros. Many people I know have used them on off-road bikes and they say they are at least as good as the old Fox Podium shocks which were considered top of the line. That's what I was going to get before I decided to use the Gsxr shock, now I'm commited haha.

RacingBros Shicane HLR Kawasaki Ninja 250/300 Coil Shock – Steady Garage

 

[jjmaine]

But don't buy it from that link lol. Last I knew, Parts Giant had them for sale on ebay for $530

 

[Frank]

PM sent (I think...)

 

[jbdbloh7]

This is a 2007 Gsxr600 shock that I modified to fit my 300. I used it last summer and it works fine. No leaks and the adjustments work well. I have another one that was sent out to be rebuilt and revalved so I won’t be needing this one as it won’t fit with my new linkage anyway (see my winter project thread).
With the bushings for the top bolt (you will need an m10x65mm bolt and nut same as the gsxr600 oem top bolt) this should fit fine after you cut off the plastic airbox flap. The stock spring works fine for me at 185lbs and there is room to adjust preload either way. I’d guess it’s good for maybe 175-195lbs but that’s just a guess.
Will sell for $100 plus $25 for shipping (Lg priority flat rate box). Maybe $125 seems like a lot for one of these shocks but keep in mind it took me over 4 hours just to file and widen the bottom clevis, not counting drilling the clevis bolt holes and the top bushings out. If anyone cares, the top bushings are Crf shroud bushings drilled out to 10mm and they fit perfectly

I have tried unsuccessfully to message. I want this. [email protected], Cory 603-762-5306

 

[jjmaine]

I’ll email you.

 

[motopreserve]

If the bike didn’t come with the Penske I’d snatch this up in a heartbeat. Can’t get adjustable rear shock for anywhere near this price.

 

[jjmaine]

Sold it to Cory

 

[jjmaine]

Would a straight rate shock spring have an advantage over the gsxr600 progressive 520/540 spring? The only evidence I have seen is someone on the Gsxr forum said “Get rid of that trash progressive spring!”
I feel like having a spring that ramps up in pressure is foolish since you set your sag on the initial spring rate?
Wonder if I should get a straight rate spring now before I mount everything up….

 

[motopreserve]

I have never had a progressive spring on a rear shock. And the only prog. fork springs were on vintage bikes which had no adjustability other than preload spacer length and fork oil wt.

Seems odd to me that you’d need progressive rates on a rear spring. I guess it depends how you’re using it. Might not be too off-putting on street only. But on the track if think you’d want predictability throughout the range.

 

[jjmaine]

Oops I put this in the wrong thread, oh well.

Yeah I thought it was strange too but these Gsxr shocks come with a progressive spring 520/540
And the shock is smaller at the top vs the bottom. I think I might just swap it for a straight rate and call it good.