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.
AC Racing puts every subframe through a heat treating process that results in an extremely tough product.
To prevent rusting and provide durability AC Racing uses stainless steel thread inserts.
The AC Racing subframe is built with tight tolerances to provide an exact OEM match and ensure an exact fit every time. AC racing uses square or round tubing to match OEM build dimensions.
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!!
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 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.
The AC subframes are designed to be OEM replacements. AC makes a lot of quality aluminum products and you should have no issues. If for any reason you run into any problems, please contact our customer service and we will get you taken care of.
This is an OEM replacement subframe. It is designed to replace the stock subframe and accept the same exhausts the stock subframe would. This will not be dual exhaust compatible as the 2009 CRF250r did not come with, and was not designed to use dual exhaust. Any exhaust designed to fit the 2009 CRF250r will work this subframe, including FMF.
They changed a lot of things from 04-06. The air box is different, the side panels, and the sub frame are all different so I wouldn't recommend trying it. It will probably turn out to be more work than it's worth.