LARGE Universal front mount is for 1 1/2" (1.5" or 38 mm) up to 2" (51 mm) bike down tube diameters.
This unique offset design of the mount allows it to not only fit various down tube sizes and required installation lengths but will also reduce vibration. You can mount it so that it does not greatly increase the length of the front mount from stock or it can be flipped around to increase the length of the front mount. (Please see our downloadable installation instructions for photos) It can also accommodate oval shaped tubes.
The bracket is made from HD steel and is powder coated gray. The kit comes with all the necessary hardware for almost any application.
We sell two general sizes for tube size - large and small. Within those sizes the mounts are sized to fit both types of engine stud spacing - there are narrow and wide stud spaced engines made in China. The correct mount must be selected.
Down tube size means the tube Outer Diameter (O.D.) - the tube sizes are somewhat approximate due to bike tube manufacturing tolerance, paint thickness, etc. Most bikes range from 1.125" to 2.00". Diameter is the distance across or the actual tube size. It means two times the radius. Not the distance around the tube, which is called circumference. Diameter is best measured using a caliper - you can even use a low cost plastic caliper. Also - if you have accurately measured the circumference of your down tube, you can convert to diameter using Pi X D = Circumference. To find Diameter (D) if you know Circumference, divide Circumference by Pi (3.141) or there are on line calculators.
As noted also please verify and select the center to center spacing of your engine studs. The two sizes are ~1.6" (~41 mm) and ~1.9" (~48 mm). These are approximate distances because the engine studs may not be perfectly parallel. It is best to measure this distance as close to the engine as possible
Please select your tube width and engine stud spacing below.
Universal Front Mount Installation Instructions
motor mount/ large frame diameter
Posted by Duane Conklin on 10 25 2018
It looks good,built well ,great price,that's why I ordered another,and they come in different sizes.
Posted by Drew on 08 12 2017
I needed a custom front mount for a bike that was a tricky fit. I looked up and saw what mount other people had used for this bike and this was the one. Fantastic product.
couldnt be a better fit!
Posted by Matthew on 03 25 2017
I was more than pleased with this oversized front mount fit perfectly and the included machined aluminum shims are an added bonus, they look way nicer than stacked washers! After painting everything flat black it's a perfect match to what I had in mind!
Posted by Jeffery Duran on 12 09 2015
Great solution for my 2 stroke engine and large downtube. Solid build, I wouldn't be able to beat that engine out the frame with a bat. Yes I would recommend this product to my friends... Enjoy!
Posted by matthew schrayter on 07 17 2014
just got it and yes it fit like a glove.thank you for an outstanding product
Posted by Jake Abrams on 12 15 2012
Nothing but a NAPA muffler clamp in the box, but the plate is another story. You will spend more in time and cash trying to fabricate this plate. One thing not mentioned in the reviews is that you can steer the plate due to the angled cut holes to line up perfectly in the frame.
Posted by David Pierce on 11 27 2012
This part rocks! This will be one of the cheapest and best upgrades you will make and your engine will stay put. You also can adjust engine position a bit if needed. Excellent product!
DP - Austin , TX
Posted by vay rogar le on 11 20 2012
this is one of the best and cheapest engine mounts u can buy for the motored kits! nice fitment and very sturdy mounting and at the same time cutting out vibrations! but second time ordering this it it came with hardwares that didnt thread in to my engine.. owhell it was easily found at a local hardware store .
Posted by Ed Guiboa on 05 21 2012
the front engine mount went on with no problems very simple to install I am very well pleased with this part
Posted by linda greer on 11 16 2011
great mount.had more than enough hardware and was shipped double quick.fit perfect and very sturdy.have a 100 miles on it now and no problems.wish they sold an alternative rear mount i would buy it in a heart beat!
Posted by James Duffy on 05 26 2011
slightly different than the one pictured, but it was the perfect fit for my Micargi Huntington. very adjustable and versatile when it comes to engine placement, would recommend this over anyone else's kit.
Posted by andrew bradshaw on 04 23 2011
love it had the older style that u get from other site but this one is 100times better and it fits prefix on my schwinn riverside
Posted by Chris Kratsch on 01 21 2011
The bracket I got works great, but it's not *exactly* like the one pictured. The picture has 90 degree bends, the one I got was more on the order of 30 degree bends. Doesn't change the functionality, but this difference might be important to someone. I needed to bend mine a bit so that the bracket would hit the down tube and the engine case at the right angles, and it was easy to bend by bolting it to the engine, and putting a large adjustable wrench on the other bit. Comes with lots and lots of hardware - but doesn't include lock washers for the u-bolt (or maybe I missed them?). Overall, very good.
Posted by Luke Stroehlein on 10 14 2010
This is a really great product! It beats the heck out of the drilled through frame mount I had before that was bending. SBP came through for me again! A great product and it shipped from WA to CT in 2 days!
Posted by Josh Nelson on 10 09 2010
I ordered the Front Mount and it's better than great; it's greater!!
I got my package super fast, even delivered to Alaska it was fast!
The mount works flawlessly and I now am making smoke and noise and loving it!
Thanks guys for a very well thought out and executed product.
Posted by Jeff Gehman on 07 05 2010
FANTASTIC PRODUCT! Made my 80cc build look very proffesional. I would HIGHLY recommend this mount over the cheesy oversized tube mount included with the Chinese engine kits.
Posted by Kristopher Wiggins on 04 10 2010
very good price nice finish inludes all neded screw and spacers. A winner!
Posted by trey mcmanus on 10 16 2009
exactly what I needed . very nice and well worth the $15 ! ordered Wed afternoon received Friday morning . Super fast - and a Quality product . Thanks SBP
Posted by Alan Keck on 07 14 2009
I just put this mount on my hopped up 80cc (67cc) kit and I'm very satisfied with the quality of the part and the difference it made in the vibration. GET THIS MOUNT!!!