March 8th, 2014, 04:20 PM | #1 |
Blind 250 Loving Whore
Name: Tom
Location: Chesapeake, VA
Join Date: May 2011 Motorcycle(s): 2008 250R, 02 FZ1, '20 Fat Bob 114 Posts: A lot.
|
DIY - GSX-R Rear Shock
So I just finished installing my GSXR rear shock and promised I'd do a write up. Here it goes.
Things you'll need: 06-09 GSXR 600 Rear shock New dogbones ( http://burkhartcycle.com/store/index...dex&cPath=7_34 ) A drill press with vice and 31/64th bit. 2x M12x120-130mm bolts with matching nuts. 4x M14 Nuts (perfect spacers) 1x M10 bolt with nut (length rougly the same as the top shock bolt) Something to grind with, preferably a bench grinder. I only had a dremel and it SUCKED. Let's begin: Put the bike on stands and remove the fairings to include the tail section. Then remove the black plastic dirt guard. To remove that plastic piece the battery is going to have to come out and so is the battery box. Then just disconnect all the wiring from it and it should pull out the back when you unscrew it. Now you need to find a way to suspend the bike without a rear stand that uses spools. Since you're going to be taking the suspension out you can't use the swing arm. I used jack stands under my rear sets. If you still have the stock folding style foot rests you're going to have to use a jack under the motor. Then shove something under the tire to support it. The rear seat works perfect for this as you can see. Now you can start removing the shock. Start at the bottom and remove the three bolts on the V shaped piece that attaches the shock, dog bones and frame. Then remove the single top bolt and it pulls right out. This is the V shaped mount I talk about. The next part is where it gets tricky for us normal folks. I'm sure this was nothing to people like alex.s and Rexbo but I don't have a machine shop on hand. I actually bought a drill press and vice for this occasion. The bottom part of the shock where the dog bones will attach is for an M10 bolt. Our V shaped metal piece I talked about earlier is sleeved for M12. So we need to drill out the holes on each side to 31/64th. The best way to do this was on a drill press with an attached vice. You could probably get away with a drill and a vice though. The top mount for the GSXR shock is an M10 also. The metal sleeve in the bushing is not very thick in the first place and I really didn't feel comfortable drilling all the way through it with a 31/64th bit so that's where the M10 bolt comes into play. After we've drilled the holes on the bottom mount of the shock to the correct size, it's still too narrow on the inside to fit our stock mount in. This is where we have to grind until it fits together. I ground down some of the steel sleeve, some of the stock mount and some of the inside of the GSXR shock mount until it all fit together. There's really no easy way to get this done, it just took a lot of grinding and trial and error until it fit in there. That's really the hardest part and once you have them fitting together you can go ahead and re-install in reverse. The dog bones will not clear the GSXR spring without some sort of spacer though. The M14 nuts work perfect for this and they're cheap. So when you put the bottom back together 2 of the three holes in the V mount will have the stock hardware. The one hole where the dog bones hook up will have to look like this. Bolt-Dogbone-M14nut-mount-M14nut-dogbone-M12nut You're going to do this on both ends of the dog bones and it should clear perfectly. You'll see my bolts are slightly long but 130mm was the closest I could find that would work. 120-125 would probably be fine as well. If you notice you can't get the shock to line up for the dog bone holes, remove the seat from under the rear tire. This will drop the swing arm all the way down and then you can use your foot under the tire to adjust while you line up that hole. Since the top mount on the frame is drilled for M12 but the GSXR shock is an M10 and we're using an M10 bolt, there's going to be a little play at the mounting holes when you put it in. I'm not concerned about it because the metal sleeve in the bushing of the shock is the correct size and we are going to tighten down the top bolt with the suspension LOADED. That way any play in the frame holes has been pushed up to the top of the hole and rebound alone while riding won't move it. All bolted up. I'm sure I'll think of some other stuff and add to this later to clean it up. |
|
March 8th, 2014, 05:48 PM | #2 |
ninjette.org certified postwhore
Name: .
Location: .
Join Date: Feb 2011 Motorcycle(s): . Posts: Too much.
MOTM - Feb '13, Feb '14
|
Good work
Question: is that a Shroeder valve on the canister at the top of the shock? What does adding air pressure do? |
|
March 8th, 2014, 05:56 PM | #3 |
Que Buenos Son!!!
Name: Ryan
Location: Grovetucky, OH
Join Date: Jun 2012 Motorcycle(s): Aprilia Shiver 750, Husaberg FE 450, Ninja 300 (sold), xr100 Posts: A lot.
MOTM - Nov '14
|
How come you need new dogbones to do this swap on the new gen 250? I replaced the rear shock on my 300 with a gsxr shock, and used the stock dogbones with no change in ride height.
Anyway, good work. It it a nice improvement over stock IMO.
__________________________________________________
Don't do something because it's easy,.. Do it because it's not! If you aren't going forward, then you're falling behind. "Drive it like you stole it"!!! |
|
March 8th, 2014, 06:32 PM | #4 |
Blind 250 Loving Whore
Name: Tom
Location: Chesapeake, VA
Join Date: May 2011 Motorcycle(s): 2008 250R, 02 FZ1, '20 Fat Bob 114 Posts: A lot.
|
I think the valve is for when you re do the internals and stuff.
The stock dog bones for the 250 will end up lowering it an inch or so. |
|
March 8th, 2014, 06:34 PM | #5 |
ninjette.org certified postwhore
Name: Hansveer
Location: Bombay, India
Join Date: Jan 2012 Motorcycle(s): Ninja 250r - Track whore, Ninja 300 - SOLD, KTM RC390 - Orange Hulk, Ducati 899 Panigale - Red Devil. Posts: A lot.
|
That's where you fill in the nitrogen...
|
|
March 8th, 2014, 07:25 PM | #6 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
MOTM - Apr '14
|
what length dog bones did you end up going with, how does the height compare to stock?
__________________________________________________
I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
|
March 8th, 2014, 08:20 PM | #7 |
Blind 250 Loving Whore
Name: Tom
Location: Chesapeake, VA
Join Date: May 2011 Motorcycle(s): 2008 250R, 02 FZ1, '20 Fat Bob 114 Posts: A lot.
|
Its coming lol. I put the 1.25" on but as you can see the bike is still apart. I'm doing the front also. When I get the front done and put together I'll report back with the specs lol.
|
|
March 9th, 2014, 06:41 PM | #8 |
ninjette.org dude
Name: 1 guess :-)
Location: SF Bay Area
Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much.
Blog Entries: 7
|
Nice! /linked
__________________________________________________
Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered) |
|
March 11th, 2014, 06:42 PM | #9 |
Rode with the Dinosaurs..
Name: Joe
Location: middle of the pacific
Join Date: Nov 2013 Motorcycle(s): '08 Ninja 250 Posts: 486
|
Great so far but I am trying to see where you had to grind?
__________________________________________________
Fortune favors the brave! |
|
March 11th, 2014, 06:57 PM | #10 |
Que Buenos Son!!!
Name: Ryan
Location: Grovetucky, OH
Join Date: Jun 2012 Motorcycle(s): Aprilia Shiver 750, Husaberg FE 450, Ninja 300 (sold), xr100 Posts: A lot.
MOTM - Nov '14
|
You have to grind the inside of the mounts on the shock. You don't need to grind much, an angle grinder worked for me.
__________________________________________________
Don't do something because it's easy,.. Do it because it's not! If you aren't going forward, then you're falling behind. "Drive it like you stole it"!!! |
|
March 22nd, 2014, 06:38 PM | #11 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
MOTM - Apr '14
|
^ this
The y shaped metal piece on the bottom end of the shock. You need to take a little off the inside so it will fit around the stock knuckle So i finished this up today. No huge surprises, i definitely ended up doing things a little different to say the least. I couldn't find any 12mm bolts long enough anywhere, was thinking about using thread all but changed my mind. Stepped up to 1/2 inch. Drilled out the 2 steel spacers for the dog bones to 1/2", the steel spacer in the knuckle for the bottom of the shock. All the gsxr shock holes out to 1/2" and the stock top shock/frame bracket holes to 1/2" Everything fits tight like a tiger with little play and that makes me happy, but i must say with that large diameter spring there is little to no clearance in a few places between spring and swing arm kinda has me nervous. had to trim up the bottom of the mud flap/battery box piece as well to clear top of shock
__________________________________________________
I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. Last futzed with by subxero; April 8th, 2014 at 12:43 PM. |
|
March 22nd, 2014, 06:57 PM | #12 |
Blind 250 Loving Whore
Name: Tom
Location: Chesapeake, VA
Join Date: May 2011 Motorcycle(s): 2008 250R, 02 FZ1, '20 Fat Bob 114 Posts: A lot.
|
Ya sorry forgot to say you have to trim the black plastic guard to about the first well nut set to get it to clear the reservoir.
I had to go to an Ace to find the M12 bolts. |
|
March 25th, 2014, 06:33 PM | #13 |
Rode with the Dinosaurs..
Name: Joe
Location: middle of the pacific
Join Date: Nov 2013 Motorcycle(s): '08 Ninja 250 Posts: 486
|
All put back together now. I got the bolts from a local source (cost almost as much as the shock which was $23.11 shipped). I only had to cut back the flap to the point shown in your photo. No other mods were required to the airbox/battery box.
Rather than put new dogbones in I lowered the front by 1" (putting on vortex clip ons next week), and measured the drop on the rear which came out to 12mm. The slightly increased rake makes turning easier and did not detract from the high speed stability. I spent the last couple of days dialing it in and it is AWESOME. The rear feels planted and exhibits no bad habits in turns. I get great feedback in the pegs as to what the rear is doing now. I had already put Sonic Springs in the front and changed to a heavier oil so the suspension feels much better balanced now.
__________________________________________________
Fortune favors the brave! |
|
March 25th, 2014, 07:20 PM | #14 | |
Blind 250 Loving Whore
Name: Tom
Location: Chesapeake, VA
Join Date: May 2011 Motorcycle(s): 2008 250R, 02 FZ1, '20 Fat Bob 114 Posts: A lot.
|
Quote:
|
|
|
April 8th, 2014, 10:31 AM | #15 |
ninjette.org member
Name: Steve
Location: Toronto, Canada
Join Date: Feb 2013 Motorcycle(s): '13 GSX-R600, '09 Ninja 250, 04 SV 650 (track) Posts: 157
|
so...I just finished this mod....I ordered the raising dogbones and they didn't show up. I emailed the guy and he didn't respond, so I ended up putting it all back together with the stock dogbones.
I did the goldvalve and new springs in the forks at the same time. In order to compensate for the geometry change, I left the forks sticking out of the top triple 20mm....is this too much? |
|
April 8th, 2014, 10:36 AM | #16 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
MOTM - Apr '14
|
^I ended up just making my own dog bones.
I think stock spec for the forks sticking out of the triple is around 12mm so you are only 8mm higher, should not be a big deal but is probably not ideal solution. I don't know a whole lot about rake ect...
__________________________________________________
I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
|
April 8th, 2014, 12:35 PM | #17 | |
Blind 250 Loving Whore
Name: Tom
Location: Chesapeake, VA
Join Date: May 2011 Motorcycle(s): 2008 250R, 02 FZ1, '20 Fat Bob 114 Posts: A lot.
|
Quote:
|
|
|
April 8th, 2014, 12:45 PM | #18 | |
ninjette.org member
Name: Steve
Location: Toronto, Canada
Join Date: Feb 2013 Motorcycle(s): '13 GSX-R600, '09 Ninja 250, 04 SV 650 (track) Posts: 157
|
Quote:
okay so my other question to you Tom....is the top bolt....The holes in the stock bracket was 12mm the gsxr shock could only take a 10mm bolt....is there any concern about play? |
|
|
April 8th, 2014, 01:02 PM | #19 |
Blind 250 Loving Whore
Name: Tom
Location: Chesapeake, VA
Join Date: May 2011 Motorcycle(s): 2008 250R, 02 FZ1, '20 Fat Bob 114 Posts: A lot.
|
I didn't drill it out since that collar is so thin already, so I used a 10mm bolt. If you put the bolt in and then tighten it with the suspension loaded it shouldn't have any play. The rebound alone shouldn't be enough to pull it down. Its not a lot of play to begin with either.
|
|
April 8th, 2014, 01:04 PM | #20 | |
ninjette.org member
Name: Steve
Location: Toronto, Canada
Join Date: Feb 2013 Motorcycle(s): '13 GSX-R600, '09 Ninja 250, 04 SV 650 (track) Posts: 157
|
Quote:
I did the same....tightened the **** out of it |
|
|
April 15th, 2014, 01:44 PM | #21 |
RIP Alex
Name: Cuong
Location: Houston, TX
Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot.
Blog Entries: 2
|
GSXR Shock settings
Here's the Factory setting for the GSXR shock. Remember to adjust accordingly to your bike and weight. The reservoir is filled with nitrogen. Do not fill it with compressed air! Pressure should be about 180 PSI although I have seen somewhere ranges from 150 to 200 psi.
__________________________________________________
HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days |
1 out of 1 members found this post helpful. |
April 17th, 2014, 07:20 PM | #22 |
ninjette.org certified postwhore
Name: .
Location: .
Join Date: Feb 2011 Motorcycle(s): . Posts: Too much.
MOTM - Feb '13, Feb '14
|
Honestly I fail to see why nitrogen is so important? MTB shocks do just fine at 150-200psi filled with air and they hold pressure for a long time.
I guess I'm just curious why nitrogen? Why not just get a small shock pump and adjust the pressure as needed. |
|
April 17th, 2014, 07:34 PM | #23 | |
ninjette.org certified postwhore
Name: Hansveer
Location: Bombay, India
Join Date: Jan 2012 Motorcycle(s): Ninja 250r - Track whore, Ninja 300 - SOLD, KTM RC390 - Orange Hulk, Ducati 899 Panigale - Red Devil. Posts: A lot.
|
Quote:
I would think it's because nitrogen is more stable at different temperatures? You're the science kid, you should know |
|
2 out of 2 members found this post helpful. |
April 17th, 2014, 09:13 PM | #24 | |
RIP Alex
Name: Cuong
Location: Houston, TX
Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot.
Blog Entries: 2
|
Quote:
__________________________________________________
HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days |
|
|
April 21st, 2014, 06:33 PM | #25 |
ninjette.org member
Name: B
Location: Ontario, Canada
Join Date: Apr 2012 Motorcycle(s): 2011 black Ninja 250r Posts: 114
|
With this mod has anyone noticed a difference while riding with a passenger on the bike?
|
|
April 21st, 2014, 06:37 PM | #26 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
MOTM - Apr '14
|
i don't ride 2 up but i can't imagine how you could not.
Stiffer spring and the ability to make adjustments with a twist of a screw driver.
__________________________________________________
I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
|
April 21st, 2014, 06:50 PM | #27 |
ninjette.org member
Name: B
Location: Ontario, Canada
Join Date: Apr 2012 Motorcycle(s): 2011 black Ninja 250r Posts: 114
|
I was thinking of doing this mod but was not sure if I should stick with the stock dog bones or not as I would be 190lbs with gear on my bike and looking at 320lbs with a passenger. I can get a 07 gsxr 750 shock for around $50 so i am tempted to try this mod.
Last futzed with by beniblanco; April 21st, 2014 at 08:28 PM. |
|
April 22nd, 2014, 05:35 AM | #28 | |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
MOTM - Apr '14
|
Quote:
I don't think you would hurt anything by using stock dog bones lots of people do it, but if that Burkhart guy is still making the riser ones I would just buy a set to get the bike back close to stock, but that is my preference. He sells them at a reasonable price like $20 if I remember right. This is a pretty solid swap mode, just don't rush things, collect all the pieces and you should be able to knock it out quick. Don't substitute things from the original DIY IMO stick with what works particularly using the 31/64 bit to drill out the holes, and using 12mm bolts. You might have to hunt for a while until you find these pieces but it's the way to go. If you have a drill press drilling out the top shock hole is non issue and I would rather do it than not do it.
__________________________________________________
I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
|
|
April 22nd, 2014, 09:27 AM | #29 |
ninjette.org sage
Name: Abhijit
Location: San Francisco
Join Date: Nov 2011 Motorcycle(s): Many Two Wheels .. Posts: 611
|
When i first started off with the GSXR shock mod, i was concerned with the material taken off when drilling the eyelet in order to to fit the mounting bolt. (just another avenue of thought)
So I pressed out the eyelet off the OEM ninja 250 shock and pressed it in the GSXR shock. I think i should put up my GSXR setup for sale.
__________________________________________________
[ex-AFM #828 | SMUSA #828 | Sponsors : MotionPro | LeoVince | Insurrection Racing Gloves | QstarZ Laptimers + OEM Parts @ 30-40% OFF : Harry @ 1-877-437-1631,17 harry@hondaeasttoledo.com |
|
April 22nd, 2014, 09:46 AM | #30 |
ninjette.org certified postwhore
Name: Hansveer
Location: Bombay, India
Join Date: Jan 2012 Motorcycle(s): Ninja 250r - Track whore, Ninja 300 - SOLD, KTM RC390 - Orange Hulk, Ducati 899 Panigale - Red Devil. Posts: A lot.
|
I'm selling a gsxr ohlins shock if anyone is interested 1000$ "only"
|
|
April 22nd, 2014, 11:04 AM | #31 |
Fighting Texas Aggie '05
Name: Neil
Location: Hutto, TX
Join Date: Feb 2009 Motorcycle(s): '07 ZX6R, '08 Versys, '09 250R Track, '93 F2/F3 Track Posts: A lot.
|
not to say this is wrong or will fail or any particular assurance like that, but my little brother, MKlein3004 on here, had to undo the 10mm bolt in the 12mm mount holes method as it was moving around in the rear at race pace on bumpy TX tracks with 200 lb rider regardless of how tight you made it.
Modified by welding 10 mm washers on to the mount.
__________________________________________________
Keep it rubber side down and enjoy the ride Get healthy - Get Fit - Change Your Life Click Here Or PM Me To Find More - Advocare |
1 out of 1 members found this post helpful. |
April 22nd, 2014, 11:24 AM | #32 |
ninjette.org member
Name: B
Location: Ontario, Canada
Join Date: Apr 2012 Motorcycle(s): 2011 black Ninja 250r Posts: 114
|
Would you guys say $40 cdn on a used 07 750 shock with 1000km on it is a fair price? For I can't seem to find anything lower then that locally. I have seen a few on ebay for less but with shipping it gets close to the same amount.
|
|
April 22nd, 2014, 11:25 AM | #33 | |
EX500 full of EX250 parts
Name: Bill
Location: Grand Rapids-ish, MI
Join Date: Jul 2012 Motorcycle(s): '18 Ninja 400 • '09 Ninja 500R (selling) • '98 VFR800 (project) • '85 Vulcan VN700 (sold) Posts: A lot.
Blog Entries: 1
MOTM - Aug '15
|
Quote:
I bought a 12mm reamer bit and used a drill press to enlarge the mounting holes in my SV shock. The metal bushing in the top mount had enough spare material that this was doable. The 12mm reamer actually resulted in tighter holes than the stock shock had. |
|
|
April 22nd, 2014, 12:55 PM | #34 |
Blind 250 Loving Whore
Name: Tom
Location: Chesapeake, VA
Join Date: May 2011 Motorcycle(s): 2008 250R, 02 FZ1, '20 Fat Bob 114 Posts: A lot.
|
|
|
April 23rd, 2014, 03:33 PM | #35 |
ninjette.org member
Name: B
Location: Ontario, Canada
Join Date: Apr 2012 Motorcycle(s): 2011 black Ninja 250r Posts: 114
|
Well I picked up the shock and was I wondering if anyone attempted or was thinking of painting their spring.
|
|
April 23rd, 2014, 03:37 PM | #36 |
ninjette.org guru
Name: Scott
Location: Buffalo, NY
Join Date: Mar 2012 Motorcycle(s): 2008 Ninja 250R Posts: 257
|
|
|
April 23rd, 2014, 04:38 PM | #37 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
MOTM - Apr '14
|
i removed sanded and painted the gsxr spring that came with the shock i bought. Luckily the gsxr spring is easily removed and put back on unlike some other types of shocks
don't have a picture of gsxr shock but here is a picture of an R1 shock with a spring i painted. This spring was PITA to get on and off, needed spring compressor.
__________________________________________________
I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
|
April 23rd, 2014, 09:06 PM | #38 |
ninjette.org member
Name: B
Location: Ontario, Canada
Join Date: Apr 2012 Motorcycle(s): 2011 black Ninja 250r Posts: 114
|
Good job on the spring I was thinking to paint mine red to match the red cap on the top reservoir.
|
|
April 23rd, 2014, 09:18 PM | #39 | |
Schönen Tag noch
Name: c
Location: Central Cali
Join Date: Sep 2013 Motorcycle(s): 08 ninja 250 race bike, 02 gixxer 600 telefonica Posts: 184
|
Quote:
|
|
|
April 24th, 2014, 06:26 AM | #40 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
MOTM - Apr '14
|
^ yep
__________________________________________________
I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Gixxer rear shock question - rear stiffness too high | cookiebug79 | 2008 - 2012 Ninja 250R Tech Talk | 20 | January 17th, 2015 08:19 AM |
Rear shock set to high (rear wheel slipping)? | passive101 | 2008 - 2012 Ninja 250R Tech Talk | 6 | August 10th, 2014 08:45 PM |
DIY - Adjusting the rear shock preload | noche_caliente | 2008 - 2012 Ninja 250R Tech Talk | 139 | April 6th, 2014 10:20 PM |
For sale: 2003 ninja 250 rear brake pedal and rear shock | ReDnEcK | Motorcycle-related | 0 | October 6th, 2010 12:02 PM |
Replacing my rear shock with a newgen rear shock... | ReDnEcK | 2008 - 2012 Ninja 250R Tech Talk | 4 | September 10th, 2010 12:38 PM |
|
|