March 11th, 2009, 07:05 PM | #1 |
Livin' the Minimoto Life
Name: Mark
Location: Riding around in TX
Join Date: Mar 2009 Motorcycle(s): 2022 Honda Navi, 2018 Z-125 Pro Posts: A lot.
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"J" series rear shock assembly on "F" series
I read somewhere about someone doing a swap from the F series, non-adjustable, shock to the J series unit.
Anyone ever done this? I do plan on taking it to the track more often. So I think the stiffer shock would be nice. I may get some aftermarket fork springs in the future as well. I just want low budget and decent performance. I don't want to go high dollar for this little 250.
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March 12th, 2009, 11:28 AM | #2 |
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Name: Jon
Location: Long Island, NY
Join Date: Mar 2009 Motorcycle(s): 2007 EX250 Posts: 91
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I personally would not upgrade the rear shock without upgrading the front forks to compliment. I went to a shop in Jersey that builds and races its own bikes and the guys provided me with that advice. It makes sense if you think about how load will get distributed. They said the best thing you can do first is buy better tires.
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March 12th, 2009, 05:25 PM | #3 | |
Livin' the Minimoto Life
Name: Mark
Location: Riding around in TX
Join Date: Mar 2009 Motorcycle(s): 2022 Honda Navi, 2018 Z-125 Pro Posts: A lot.
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Quote:
I was going to most likely upgrade the front fork springs and just wanted some adjustment capability for the rear.
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March 19th, 2009, 02:10 PM | #4 |
ninjette.org member
Name: Frank
Location: Long Beach, NY
Join Date: Feb 2009 Motorcycle(s): 2001 EX250-F Posts: 19
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I've done it, it's easy and cheap.
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March 19th, 2009, 10:00 PM | #5 |
ninjette.org member
Name: Jon
Location: Long Island, NY
Join Date: Mar 2009 Motorcycle(s): 2007 EX250 Posts: 91
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Luckily, your in Texas. Those tires wouldn't be able to get into operating temp for about 2-3 months here.
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March 22nd, 2009, 11:46 PM | #6 |
ninjette.org member
Name: Frank
Location: Pasadena
Join Date: Mar 2009 Motorcycle(s): 87 Ninja 250, 90 Ninja ZX750R, GPZ 900r, 02 Moto Guzzi LeMans, 95 Triumph Speed Triple Posts: 121
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I've pick up a 08 rear shock for a song on ebay and it was a easy swap onto my classic 87 Ninja 250. The 08 are about 1/4" longer eye to eye compare to 86-87 and 88-07 250's so if you mount a taller 90 series tires you'll not be able to lift your rear tire up with the center stand with a 08 rear shock.
I my rear tire is a 130-80-16 so I just barly have enough gap to spin my rear tire when on the center stand. I have not ride it as I'm rebuilding my front brakes but when I sit on the bike, my old shock will sag 2", the 08 will only sag 1" and I crank the preload 3/4 to max as I'm no light weight but I'm sure this will be an improvement over the older shocks. |
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March 29th, 2009, 08:05 PM | #7 | |
Livin' the Minimoto Life
Name: Mark
Location: Riding around in TX
Join Date: Mar 2009 Motorcycle(s): 2022 Honda Navi, 2018 Z-125 Pro Posts: A lot.
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Quote:
EXCELLENT!! lol
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March 30th, 2009, 12:11 PM | #8 |
ninjette.org sage
Name: Chris
Location: Norcross, GA
Join Date: Mar 2009 Motorcycle(s): 2006 250R Posts: 772
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Frank, let us know after you ride few miles.
I'm interested in doing this. What about 2x4 underneath the center stand with 130/90-16?
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March 30th, 2009, 12:55 PM | #10 |
ninjette.org member
Name: Frank
Location: Pasadena
Join Date: Mar 2009 Motorcycle(s): 87 Ninja 250, 90 Ninja ZX750R, GPZ 900r, 02 Moto Guzzi LeMans, 95 Triumph Speed Triple Posts: 121
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Great Minds (Franks) think alike Just got a 30 min ride over the weekend and the shock is firm but not jarring, my old shock is like marshmellow compared to the 08 shock. What I like the most is that now I have more weight on the front of the bike, I put a 110-70-16 which lower the front and a 1/4" longer 08 shock further the bias toward the front and I like how the bike handles now in corners.
I got progressive springs with no spacer (per instructions) and its a little soft so I put a little more fork oil and 1/2" spacer in each fork and its a little bit too stiff so I might take the spacer off and see how it feels with just the fork oil increase. My 87 E2 only got 35mm fork tubes, 88-07 got 36mm and 08's got 37mm. If you can find a 08 shock then by all means go for it, its really a bolt on installation. If you go touring with your ninja then stock might be better option but if you like canyon carving a firmer rear shock is always the way to go |
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March 30th, 2009, 04:43 PM | #11 |
ninjette.org sage
Name: Chris
Location: Norcross, GA
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lower profile front tire?
I'm wondering if the firmer shock will help with the weight of all the extra gear in the back for touring.
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April 4th, 2009, 12:53 AM | #12 | |
ninjette.org member
Name: Frank
Location: Pasadena
Join Date: Mar 2009 Motorcycle(s): 87 Ninja 250, 90 Ninja ZX750R, GPZ 900r, 02 Moto Guzzi LeMans, 95 Triumph Speed Triple Posts: 121
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Quote:
I personally feel 250 is bit small for touring purpose but that's just my opinion and many people have turn the F series into Iron butt rally contender. If you can find an 08 shock for little money then you got nothing to lose by trying. |
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April 14th, 2009, 09:06 AM | #13 |
ninjette.org sage
Name: A
Location: Long Island, NY
Join Date: Apr 2009 Motorcycle(s): 2000 Honda CBR600F4 (sold) 1999 Ninja 250 (sold) Posts: 586
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I bought one last week on ebay.. it should actually be here today, and I am 'planning' on getting outside to install it. I'll post up my impressions of it.
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May 21st, 2009, 01:25 AM | #15 |
ninjette.org member
Name: Scott
Location: South Mississippi
Join Date: Dec 2008 Motorcycle(s): 2003 Ninja 250 Posts: 26
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I installed an 08 shock on my 2003 yesterday and love it. I like a firm ride, and this has done just the trick. I was going to start a thread on this with my pictures, but why not just post them here. I've gained a pretty substantial amount of height. My stock shock had 16,300 miles on it, and was extremely mushy. Let me know if you guys have any questions. The photo's are arranged before/after, before/after if you can't tell.
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May 23rd, 2009, 06:30 PM | #16 | |
Livin' the Minimoto Life
Name: Mark
Location: Riding around in TX
Join Date: Mar 2009 Motorcycle(s): 2022 Honda Navi, 2018 Z-125 Pro Posts: A lot.
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Quote:
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May 23rd, 2009, 06:53 PM | #17 |
ninjette.org member
Name: Scott
Location: South Mississippi
Join Date: Dec 2008 Motorcycle(s): 2003 Ninja 250 Posts: 26
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I'm very satisfied with how it rides right now, so it's not in the plans. The forks will need to be serviced before too long though, so I may look into my options at that point.
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May 23rd, 2009, 07:06 PM | #18 |
ninjette.org sage
Name: A
Location: Long Island, NY
Join Date: Apr 2009 Motorcycle(s): 2000 Honda CBR600F4 (sold) 1999 Ninja 250 (sold) Posts: 586
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I am... I have read that someone put RaceTech .75 kg/mm front fork springs up front to complement a rear EX500 shock.. I figure it might be worth upgrading mine as well. FRONT FORK SPRINGS Recommended Fork Spring Rate for Street: 0.724 kg/mm (use closest available) Stock Fork Spring Rate: .440 kg/mm (stock) FRSP S2938080 RT FRK SPR 29.0x377mm .80kg $109.99 hmmmm
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2000 Honda CBR600F4 Silver and Red 1999 Kawi Racing Green Ninja 250 sold |
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May 24th, 2009, 03:13 AM | #19 |
ninjette.org member
Name: Jon
Location: Long Island, NY
Join Date: Mar 2009 Motorcycle(s): 2007 EX250 Posts: 91
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Definitely do that. Go to someone that really knows their stuff about suspensions and try to match the forks to the rear shock for a more well balanced bike. I bet that rear shock was toast after that many miles!!
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May 24th, 2009, 12:52 PM | #20 |
Livin' the Minimoto Life
Name: Mark
Location: Riding around in TX
Join Date: Mar 2009 Motorcycle(s): 2022 Honda Navi, 2018 Z-125 Pro Posts: A lot.
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16k is a lot of miles?
Wow, that is right around the corner on mine. I'm almost there. I need to race mine.
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May 24th, 2009, 01:45 PM | #21 |
ninjette.org member
Name: Jon
Location: Long Island, NY
Join Date: Mar 2009 Motorcycle(s): 2007 EX250 Posts: 91
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May 24th, 2009, 06:29 PM | #22 |
Livin' the Minimoto Life
Name: Mark
Location: Riding around in TX
Join Date: Mar 2009 Motorcycle(s): 2022 Honda Navi, 2018 Z-125 Pro Posts: A lot.
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Yup. The only time I don't ride is when it is too dangerous (lots of lightning, flooding, chance of hail, chance of ice/snow, etc). I don't really care how cold it is, I'll still cruise around out there.
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May 24th, 2009, 08:13 PM | #23 |
ninjette.org member
Name: Scott
Location: South Mississippi
Join Date: Dec 2008 Motorcycle(s): 2003 Ninja 250 Posts: 26
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I got my bike with 8k on it about 9 months ago. I haven't even gotten a summer's worth on it right now. I plan on adding around the same since it's finally riding season
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June 29th, 2009, 11:28 PM | #24 |
ninjette.org certified postwhore
Name: Michael
Location: Southern NM
Join Date: Feb 2009 Motorcycle(s): '91 Honda CBR600 F2 Posts: A lot.
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Quick question on the dead thread! Do you need to get the whole shock mounting piece for this mod or can you just get the spring? I'm really interested in doing this, but I don't want to get the wrong things.
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1991 Honda CBR600 F2, White/Gray, D&D slip-on exhaust, tail integrator, gel grips, Custom undertail. |
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June 29th, 2009, 11:32 PM | #25 |
Join Date: Nov 2008 Posts: Too much.
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You need the entire shock (shock and spring) from the new gen, otherwise it wouldn't be adjustable.
the one on the left in this picture... |
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June 29th, 2009, 11:34 PM | #26 |
ninjette.org certified postwhore
Name: Michael
Location: Southern NM
Join Date: Feb 2009 Motorcycle(s): '91 Honda CBR600 F2 Posts: A lot.
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I didn't say that right did I? I meant, can I just get the shock or do I have to get the mounting bracket for it too? Is the newgen shock a direct bolt-on replacement for the pregen shock?
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1991 Honda CBR600 F2, White/Gray, D&D slip-on exhaust, tail integrator, gel grips, Custom undertail. |
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June 29th, 2009, 11:35 PM | #27 |
Join Date: Nov 2008 Posts: Too much.
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June 30th, 2009, 12:08 AM | #28 |
ninjette.org certified postwhore
Name: Michael
Location: Southern NM
Join Date: Feb 2009 Motorcycle(s): '91 Honda CBR600 F2 Posts: A lot.
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Sweet. Thanks.
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