The product came and looked like it was bent, but I tried to put it on my bike anyway. There was no way to make it fit without bending it, so I decided to return it and buy the OEM part. Motosport made me pay the return shipping myself because I couldn't exchange it for the OEM yet, due to it being more expensive. Bad experience with both AC Racing and Motosport.
AC Racing Subframe
- 34 Reviews
- 9 Questions
AC Racing produced their subframe to offer a quality replacement part that is easy on the wallet.
- AC Racing realizes riding your motorcycle hard can come with consequences which resulted in making a subframe that is structurally made entirely out of 100% aluminum with 6061 billet and CNC bent mounting points and lugs.
- Every subframe is put through a heat treating process that results in an extremely tough product.
- To prevent rusting and provide durability, stainless steel thread inserts are used.
- The subframe is built with tight tolerances to provide an exact O.E.M. match and ensure an exact fit every time. AC racing uses square or round tubing to match O.E.M. build dimensions.
All the bolt holes and air box lined up. I've had it on my bike for 6 months and I haven't had any problems.
So far this frame seems as durable as OEM. Bolted right on and no issues with any plastics, seat, or muffler. so far I'm glad i bought this frame. it saved me a bunch of money after a bad crash broke the OEM frame.
I bought this subframe too save money from OEM. Do not make the same mistake as I did. The fit was terrible, the quality looks like it was made at a middle school shop class from scrap metal out of a dumpster and after 6 rides the welds had broken in two places. I contacted AC Racing and notified them. Their response was for me to pay for it too be shipped and welded. Save your money and go OEM.
Good price for a subframe and fits pretty easily BUT the mounts dont hold up well at all and it bends way too easily! I layed the bike over ever so slightly and it bent! The exhaust mount stripped the threads the first time we remounted the exhaust and the thing didnt hold up well at all! Wouldn't buy it again. Pay more for a good OEM!!
mine fit perfect but it bent after 3 races and the top bolt thread stripped out and silencer hole had to be re taped... but hard to beat the price!
Weighs exactly the same as stock about 2.2 lb. Very nice welds, n machining! All steel thread inserts, except muffler mount. Looks great, especially at about half price of OEM.
The not so good:
Requires minor tweaking to fit initally. Noticeably weaker than stock! Was my fault, but dropped bike loading it after first ride n bent it... classic example of 'ya get what ya pay for'!!!!
the ac subframe wieghs way more than my stock '05 crf 250f subframe. its bulky. and no where near the quality of the stock one. the bolt holes dnt line up and the casting holding one if the nuts in broke and i had 2 jb weld it. it gets the job done but is no where near the quality of stock...
I just bolted the subframe onto an 06 honda 450. It was a great fit. No more than a simple flex of the tubing and all the bolt holes lined up great. The frame seems plenty ridged without being brittle.We will run the bike tommrrow at Rio. Let you know how it rides after tommrrow.Only thing I can say is I didn't get any AC Racing decals for our trailer
This fit my 2004 CRF250R quite well. Took a little bit of work (pulling) to get the left side lower bolt to go into the frame, but overall, I am pleased.
Haven't crashed (again) with this new sub-frame, so I cannot comment on it's durability.
i bought this for my 01 kx 250. had to tap it into place wit a hammer but other than that a perfect fit.
I had bent my sub, and did some shopping around. By far this is a great deal. Everything
lined up pretty close. 1st time putting it on had to work it a little, now comes on and off no problems. If you run into this problem save yourself 200-300 dollars and pick this up. Can't belive how much they wanted for the OEM.
I've read many articles about this thing before I purchased it. Motosport was awesome with getting it to me right away, but when I got it the mount that holds the Gas Tank was broken off. About 3-4 rides in I took a small crash on a track in a turn that was over watered, when I got back up it was bent. I wasn't even going very fast maybe 30-35. The threads strip out too easy, they didn't plan ahead and put steal threads in like the stock one, so I did myself. After using this thing for a couple of months I ended up going back to the stock one because it's much better made. Like the title says, Don't Believe they Hype. These things are Junk.
Purchased this for a friends 01 RM-250,all the holes lined up perfectly,not one install problem,all the plastic lined up good,and it was about $200.00 less than a OEM part,now his rear fender is nice and straight....
Every thread stripped, fits fine on my 2006 yamaha 450, but i guess you get what you pay for!!
This went on my 2005 KX 250F very easily. The muffler, airbox and side panels all lined up perfect. Haven't ridden yet, but the construction seems as good as the oem.
Tight fit, required serious elbow grease to line up with frame. Next step would be grinding.......
What can I expect, it's not Honda...
I bought this product becuase it was cheaper than the oem by 200 dollars. AND NOW I SEE WHY!!!! it was a tight fit and then when i got it on and took it out for a ride it worked fine but about the 5th ride out i came over a table top landed fine but THIS FRAME had cracked in two. Therefor cancelling my session and forcing me to by another
Read some of the articles and decided to try this product because of considerable savings over an OEM subframe. The first thing I noticed was it is a little heavier than the stock subframe, probably because the frames tubing is slightly larger than on the stock one. Mounted to the frame with no problems, the air box also had no problems fitting. The rear fender had a little bit of a problem because the thicker tubing squeezed it a bit, but I didn't have to drill anything. The silencer, side panels, and seat had no problems. Haven't crashed yet, but it feels like it is sturdier then the stock one, might just be the extra pound of aluminum. Overall I am glad I bought this and saved 200 dollars over an OEM subframe.
I bought this for my 03 yz450f fitment is terrible nothing lines up had to redrill holes and retap this piece of junk sits on my garage floor it was easier to straighten the old one!!!! a/c should take this off there line I will never buy a/c again