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View Full Version : Renthal rear sprocket blew up


Mxbubs
03-15-2003, 01:50 PM
Only after 4 rides, this 70$ rear aluminum renthal sprocket shattered. FYI, get a sunstar, sidewinder, or steel rear.
deathman53
03-15-2003, 02:52 PM
I had a rental aluminuim on my old warrrior and it started to brake into pieces, by the time I got home I had 1/4 of the rear sprocket and to boot, I couldn't ride the trails(too many hills), so I rode slow down the road and got pulled over. The cop looked at it and let me go. I put on a extra stock sprocket that I got for $4. After that its the last time I will buy alumium sprockets, they are junk.
lex luger
03-15-2003, 03:46 PM
gee i wonder why it did that :confused:



..i dont think aluminum on steel makes a good combination incase you guys didnt know
JOEX
03-15-2003, 04:08 PM
What is the purpose of aluminum sprockets, other than to save a few ounces?

Joe
RiPPiNiTuP7
03-15-2003, 04:10 PM
Originally posted by JOEX
What is the purpose of aluminum sprockets, other than to save a few ounces?

Joe

Waste money :p
OutlawEX
03-16-2003, 10:33 AM
Originally posted by RiPPiNiTuP7
Waste money :p

i agree
AtvMxRider
03-16-2003, 10:41 AM
That's all they are for is to save weight. Next time buy a steel one.
Mxbubs
03-16-2003, 01:47 PM
I emailed Renthal, waiting to hear a response.
lex luger
03-17-2003, 05:45 AM
Originally posted by Mxbubs
I emailed Renthal, waiting to hear a response.

don't expect one anytime soon, or something legit...
Extremeracer167
03-17-2003, 08:02 AM
well supposedly, running a steel rear sprocket is like running a flywheel weight. They claim u will have snappier power with an aluminum rear sprocket, thats why alot of MX guys run them. Plus they think it helps with weight:rolleyes:
lex luger
03-17-2003, 08:09 AM
Originally posted by Extremeracer167
well supposedly, running a steel rear sprocket is like running a flywheel weight. They claim u will have snappier power with an aluminum rear sprocket, thats why alot of MX guys run them. Plus they think it helps with weight:rolleyes:

maybe its because the have the money to burn too? :rolleyes:
Ex'r Marlin
03-17-2003, 08:10 AM
WOW.... I am honestly surprised to hear this!:confused:

I don't do MX, but for several years, the aluminum rear sprocket on my 300ex gave me no trouble, and now for about 7 months, my Renthal aluminum rear has no signs of failing on my 416.

Thanks for your thread. I have never heard of an aluminum sprocket shatter... And it happens to be a Renthal?!!:confused:

Please let us know if you hear anything back from Renthal.

BTW... I had a stainless Sidewinder rear sprocket that broke and had several stress cracks in a 4 month period on a stock 400.:grr

Again, thanks Mxbubs for your thread... Best wishes on your new sprocket!
300EX_HMF
03-17-2003, 09:45 AM
yeah i cant believe yours did that!! i have a 36 rear aluminum renthal sprocket and its been on there for almost a year!!
Mxbubs
03-17-2003, 11:11 AM
I had a bud that warned me not to buy it because his blew up.

Spoke to Renthal today, they said send it back and they would send me another. I told them I wanted a cheaper steel one, they said okay.

Suprised me.:D
lex luger
03-17-2003, 01:05 PM
make sure ( unless your sprockets are new) you replace them when you do your chain
Mxbubs
03-18-2003, 01:03 PM
Entire setup has only 4 rides on it! Renthal is not good aluminum sprocket makers.