Kawasaki Ninja 300 Forums banner
1 - 11 of 11 Posts

·
Registered
Joined
·
42 Posts
Discussion Starter · #1 ·
I find the stock rear shock pretty harsh and since I already have back problems, I may get a good adjustable shock. Just wondering if it improves the ride much to be worth $600+? Same as my other thread asking about the ecu flash, just wondering if it will be worth the money so I thought I would ask those who have done it.
I don’t race but even riding on the street at a regular pace the shock is very harsh and I am 190lbs. I have it set in the middle for preload now…
 

·
Registered
Joined
·
42 Posts
Discussion Starter · #2 ·
I’m aware of the Gsxr 600 swap but I don’t want to go through the hassle of getting a new spring put on it and cutting my airbox at all. I don’t mind spending the money if it will drastically improve my riding comfort:)
 

·
Super Moderator
Joined
·
696 Posts
I'm (shamely) still in the stock rear shock, but through the years I didn't hear one person that wasn't happy with the upgrade.
And the happiest were the people that went with the GSX one because it's good and it's cheap.
Different years of GSX shocks have different spring rates. You can figure out what spring rate you want and then try to find one of those.
 

·
Registered
Joined
·
42 Posts
Discussion Starter · #4 ·
Oh nice I'll check those out though i would rather not have to cut my airbox... I know upgraded shock should be better, it seems obvious but I only ride normal road spees for the most part. Just need some helps with the bumps haha.
You don't find the stock shock to be harsh at all? Maybe I should clean and re-grease my linkage and swingarm like I saw someone else doing recently...
 

·
Premium Member
84' Goldwing Aspencade, 91' EX500, 98' Ninja 250 w/ 17' 300 engine, 07 EX500
Joined
·
187 Posts
So are you looking for a softer shock/ride? Have to tried to adjust the OEM shock?

How much do you weigh?

If your just looking for a softer spring, just change the spring out, Race Tech has rear springs.

The spring is fairly easy enough to change, and it's a whole lot cheap.

Here is a link that might help you out.

RT - Digital Product Search


Sidenote: the old Ninja 250 & 500 guys swap out the their OEM shocks, for the Ninja 300 ones. It's got a better spring for heavy riders (200lbs+)

Also have you the sag? And the front springs might need to be changed as well, to keep the balance of the bike.

Hope this helps you out.
 

·
Registered
Joined
·
42 Posts
Discussion Starter · #6 ·
Thanks Ghost, I have adjusted it. I can get the correct sag with the stock spring so I don’t think that’s my problem. I’m on the middle setting now and sag is about right (I can’t remember exact but maybe on the high side 40mm?) I have tried it on the 2nd lowest setting to get a little softer ride but then the rear of the bike really squats. I’m 190lbs.
It feels to me like the shock damping doesn’t allow the shock to compress fast enough because when I hit a good size bump the shock kind of bucks the rear of the bike up.
I’ve changed the front springs and oil already and those feel a lot better.
There is no way that a fully adjustable shock with the correct spring rate would not be better than the stock shock. Just how much better is the question I guess…
 

·
Premium Member
84' Goldwing Aspencade, 91' EX500, 98' Ninja 250 w/ 17' 300 engine, 07 EX500
Joined
·
187 Posts
That depends on how deep your pockets are, personally going for a fully adjustable shock which could be anywhere from $600 to $1,000.

I might try going with a slightly lesser spring in the rear, that would help.

But one must remember that the Ninja 300 is based on a ninja 250 which is an old antiquated analog design. Unfortunately you're stuck with old technology and an old frame etc etc.

Good luck and if you have any more questions just post them up.
 
  • Like
Reactions: Topaz and jkv45

·
Super Moderator
Joined
·
696 Posts
Yes, make sure the linkage is in good condition and well lubed. Same as the swingarm pivot point. Check the bearing and lube it.

I think that what you need to cut to fit the GSX shock is not the airbox but the end of the big plastic panel which serves as rear fender and battery tray. And from what I saw, it doesn't affect its functionality as either fender or battery holder.

How many years and miles old is your bike? If it's old, even if the shock works fine and doesn't leak, the oil inside is worn out.
That shock is not serviceable, so I guess Kawasaki expects owners to change it with a new OEM shock, which is listed for almost $700.
You can have a used one, but nothing used for the N300 is newer than 2017, so already 5 years old.
If you plan to keep the bike long, then I think getting a nice serviceable and adjustable shock is well worth.
If you're planning to sell it, then it's not worth.
 

·
Registered
Joined
·
42 Posts
Discussion Starter · #9 ·
Thankgs guys! I can afford it but just wanted to ask if it was worth spending the money on since my riding is basically short commutes and weekend blasts around the countryside. Maybe a softer rear spring would help as I've had a couple pre-gen 250's and a 500 but never had an issue with the suspension being as harsh as on this bike.
Topaz you make a good point also, my bike is a 2016 nearing 8000 miles so likely at the least the oil needs replacing (if only it were possible). No way I'd spend any money to replace it with another oem unit. If I replace it it will be with something adjustable and rebuildable. I have no plans to sell it, these little ninjas are awesome and perfect for the riding I like to do (and very easy to maintain).
I just have a habit of thinking I need things and after I buy them realize I could have done without it lol. Trying to cut back on that and make informed purchases from now on.
 

·
Premium Member
84' Goldwing Aspencade, 91' EX500, 98' Ninja 250 w/ 17' 300 engine, 07 EX500
Joined
·
187 Posts
If you want to you could just find a used rear shock off a EX500/Ninja 500r. As it's spring is less stiffer that the 300 one.

The 500 one is at least adjustable like the 300, and it's a true bolt on swap.

I might even have a 500 shock in my pile of spare parts, I could look if you wanted to try it out first.
 
  • Like
Reactions: jjmaine

·
Registered
Joined
·
42 Posts
Discussion Starter · #11 ·
Thanks Ghost I appreciate the offer but I think I will upgrade the shock since I plan on keeping the bike around. I guess I'll find out if it was worth the money lol,
 
1 - 11 of 11 Posts
Top