Custom swing arm

Racer x · August 2nd, 2010, 10:28 AM

I am looking at extending my rear swing arm about 6 inch. I want to make a better rear fairing for land speed racing. I don't want a wider tire. I run 120 mm rear tire.

I want an aluminum unit .Anyone know of a factory swing arm ,say from an old 600 something that can be easily modified. I can have a custom made one for 1000 dollars but I don't have that kind of money.

ztrack157 · August 2nd, 2010, 11:28 AM

HOnda VRF 400 single sided swigarms are popular swaps and it moves the tire back but how much I am uncertain

glitch · August 2nd, 2010, 11:47 AM

I'm not aware of any 250R specific parts, but perhaps you could adapt, say, a ZX6R extender... something like one of these:

http://http://www.buynowroaringtoyz....ions_s/201.htm

drumm3r9 · August 2nd, 2010, 06:27 PM

Not sure about extended.....I'm doing a swing arm mod right now so I can fit up to a 180 rear tire (I'm gonna go 170) When I took the parts to the welder/machinist, who also happens to be a motorcycle mechanic, he said that he could extend it for me while he was widening it but I declined as I am not going for the fastest 250 like you eric!

He is doing work on the stock swing arm for me....I'm sure if you found the right guy he could extend the stock one as well......but aluminum.....i'm not sure about where to find one of those.

ztrack157 · August 4th, 2010, 08:30 PM

I can get an aftermarket aluminum arm for you cheaper.

Racer x · August 5th, 2010, 02:56 AM

How cheap? Single sided will not be long enough. I got a price of 1000 dollars and 1300 with powder coat.

CZroe · August 5th, 2010, 08:28 AM

I thought extending it was to keep the front wheel down on the drag strip. Clearly, that isn't why you need it. What else does extending it achieve?

Alex · August 5th, 2010, 08:58 AM

Sounds like it will allow him to make the bike more streamlined. The extended arm itself won't do anything on its own for top speed, but what he can build around it very well may.

August 2nd, 2010, 10:28 AM	#1
Racer x ninjette.org certified postwhore Name: Eric Location: Iowa City Join Date: May 2009 Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X Posts: A lot. Blog Entries: 54 MOTM - Sep '18, Feb '16	Custom swing arm I am looking at extending my rear swing arm about 6 inch. I want to make a better rear fairing for land speed racing. I don't want a wider tire. I run 120 mm rear tire. I want an aluminum unit .Anyone know of a factory swing arm ,say from an old 600 something that can be easily modified. I can have a custom made one for 1000 dollars but I don't have that kind of money.

August 2nd, 2010, 11:28 AM	#2
ztrack157 The Sportisi Master Name: Matt Location: Chico Join Date: May 2009 Motorcycle(s): 2008 Ninja 250 Posts: A lot.	HOnda VRF 400 single sided swigarms are popular swaps and it moves the tire back but how much I am uncertain __________________________________________________ Sportisimoto USA is born.

August 4th, 2010, 08:30 PM	#5
ztrack157 The Sportisi Master Name: Matt Location: Chico Join Date: May 2009 Motorcycle(s): 2008 Ninja 250 Posts: A lot.	I can get an aftermarket aluminum arm for you cheaper. __________________________________________________ Sportisimoto USA is born.

August 5th, 2010, 08:58 AM	#8
Alex 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	Sounds like it will allow him to make the bike more streamlined. The extended arm itself won't do anything on its own for top speed, but what he can build around it very well may. __________________________________________________ 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)

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August 2nd, 2010, 11:47 AM	#3
glitch ninjette.org member Name: Andy Location: Oregon Join Date: May 2010 Motorcycle(s): '08 Kawasaki Ninja 250R, '09 Kawasaki Ninja ZX6R, '81 KZ440 LTD Posts: 14	I'm not aware of any 250R specific parts, but perhaps you could adapt, say, a ZX6R extender... something like one of these: http://http://www.buynowroaringtoyz....ions_s/201.htm

August 2nd, 2010, 06:27 PM	#4
drumm3r9 ninjette.org member Name: Kyle Location: Silver City Join Date: Jul 2009 Motorcycle(s): Kawasaki Ninja 250r Posts: 79	Not sure about extended.....I'm doing a swing arm mod right now so I can fit up to a 180 rear tire (I'm gonna go 170) When I took the parts to the welder/machinist, who also happens to be a motorcycle mechanic, he said that he could extend it for me while he was widening it but I declined as I am not going for the fastest 250 like you eric! He is doing work on the stock swing arm for me....I'm sure if you found the right guy he could extend the stock one as well......but aluminum.....i'm not sure about where to find one of those.

August 5th, 2010, 02:56 AM	#6
Racer x ninjette.org certified postwhore Name: Eric Location: Iowa City Join Date: May 2009 Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X Posts: A lot. Blog Entries: 54 MOTM - Sep '18, Feb '16	How cheap? Single sided will not be long enough. I got a price of 1000 dollars and 1300 with powder coat.

August 5th, 2010, 08:28 AM	#7
CZroe CPT Falcon Name: J.Emmett Turner Location: Newnan, GA Join Date: Apr 2009 Motorcycle(s): '08 CP Blue EX250J, '97 unpainted EX250F, 2nd '97 unpainted EX250F (no engine), '07 black EX250F Posts: A lot.	I thought extending it was to keep the front wheel down on the drag strip. Clearly, that isn't why you need it. What else does extending it achieve?