Shift Kit-the ultimate in shifting technology
MADE IN THE USA - we encourage you to compare to inferior imported kits, often at higher prices!
This kit will fit almost any stock, unmodified Chinese 2 Stroke bike engine and allow the user to shift gears using the bike's standard rear derailleur. This and our HD kits are what you see in the YouTube videos. Take a look at the parts list in our installation manual to see what we supply in this kit.
NOTE: This kit is for use with stock 49cc engines. If you have a slant head, aftermarket head or the larger 66 cc engines you will need an HD kit,
Note that this kit comes with typical mountain bike style crank arms and requires 9/16" pedals.
If you have a one piece crank you will need a bottom bracket adapter and most likely will need to purchase new pedals.
All our Shift Kits are designed for engines with the standard 6 mm mounting hardware. If you engine has 8 mm hardware some modifications will be required.
Here are links to additional information, read carefully before purchasing:
SBP also suggests a chain breaker and crank removal tool for this installation if you do not already own them.
Do not forget to measure your seat tube and select the appropriate size.
Also note you will use the bottom bracket on your bike instead of the one that comes in the kit.
PLEASE CONSIDER THE SBP EXPANSION CHAMBER AND OTHER PERFORMANCE ACCESSORIES WITH YOUR SHIFTER KIT
needs a better product description
Posted by Chad on 03 18 2019
Great product. Except for the missing clamp which I had to go buy at Home Depot. Also this kit is for an engine with 6mm bolts not 8 mm so I had to improvise
SBP Jackshaft kit
Posted by Mark on 03 02 2019
I like Tha quality of all the parts. The fit is very good in my case no modification was needed. Customer service from the time of order to delivers was also excellent. The only area that needs improvement are the installation instructions. The installation instructions are not very clear and jump around having you install and disassemble move on to another area then back to something recently installed and disassembled.
Hoping they rewrite the instruction manual or better yet make a video and include it with this product.
Get the grinder out
Posted by Unknown on 08 09 2018
A few things got my attention while reading the manual. Like, grinding things smooth so things fit right. I'm not adverse to a little modifying here and there, one size does not fit all. I'm putting this on an old Schwinn Town and Country trike. Center mounted jackshaft was the only way I could think of to put power to the rear wheel. I'm glad this was invented.
broke first 100 yards
Posted by jason on 07 03 2018
The front free wheel broke less then a 100 yard not to happy right now paid to much for this to happen
It was noted the customer used a Standard Kit for a 69/80 cc engine which is contrary to the requirements of the kit.
Posted by Jeremy Penney on 03 21 2018
I've purchased this product before, and was completely satisfied with how it works. It's so easy to install and to use. I highly recommend it.
works great, and well made
Posted by kyle on 10 29 2017
I bought this kit after wasting about 2 weeks on trying to get an eBay kit to work, and the difference is obvious right out of the box. The sick bike parts shift kit comes with a one piece engine mount vs the China kits 3 piece that’s moves every time you pedal and Wacks out your chain tensions. Basically everything in the sick bike parts kit is much better quality, when my kit arrived it only took me about 3 hours to install vs the two weeks I wasted screwing with the China kit and still couldn’t get it to work. And the customer service at sick bike parts is second to none, I installed my kit on a mongoose dolomite fat tire bike. I emailed their tec guy asking him which extra parts I was going to need for my project and he sent me a list of everything i needed within 30 minutes of emailing him. This is a great company, you can’t go wrong!
bikes with motors
Posted by RMG on 08 15 2017
awesome kit! arrived quickly and quality is better than the
pictures show. two day install bike is running great with the SBP shift kit!!!
Posted by mike on 06 20 2017
Quality parts in package easy to install with there online instructions will b buying more parts
Posted by Juan Barrios on 09 26 2016
Que necesito si tengo una bisicleta fat tire?
You might need a longer shaft, but our new kits come with a 6" shaft
Posted by Juan Barrios on 09 26 2016
Tengo una bisicleta fat tire que necesito comprar para el quitar de cambios
I have a fat tire bike I need to buy for changes
Posted by Samuel Sullivan on 06 21 2016
Everything that comes with this kit is good. The only thing I advise is that you spend the money for proper tools. Also the freewheel that comes with this kit may be okay with the smaller 49cc engines without modifications. Also keep in mind that I wouldn't recommend jamming the freewheel by pedaling with force and then releasing the clutch lever as this may put unnessesary wear on the ratcheting part of the freewheel. I would load the freewheel first and then use the nessesary force once its loaded. The manuals posted to this website are a valuable resource and should not be taken for granted. I highly recommend sbp shift kits!
Posted by Kenneth Robinson on 07 25 2012
Love the product, but you might as well stop selling the standard kit. Blew out the standard freewheel bearing on the first day. Now I'm waiting on a heavy duty and removal tool before I can ride.
Posted by Jonathan Foster on 02 03 2011
Excellent product, however make absolutely certain that you check all of the mounts to be certain they are all tight every time you ride for the first week.. After 3 days riding on it and checking each day (except the 3rd day) my top mount to the seat post had worked its way loose and bent the frame for the shift kit causing my freewheel to bind up. That was completely my mistake (I think.....) so now I have to get the freewheel removal tool and a new freewheel, possibly a new shift kit frame as well if I'm unable to straighten this one out.. Just make sure you check it every time you go out to ride until all of the chains are broken in and stretched out and you should be fine.
Posted by Jose Padro on 08 30 2010
It's a great product. Great invention. I can't wait to build/use the new shift kit. I was hoping to offer a suggestion:
My suggestions (would be nice) if the kit would have a free wheel in the sproket on the motor side. that way, you won't feel any resistence from the motor when your peddling. Also to have pull start. That would be my suggestion.
Posted by norm crispin on 05 12 2010
Good kit, but after trying to save money with this kit had a freewheel failure. So any money saved was lost when I upgraded to the HD freewheel & tool. I suggest u buy the HD version.
Posted by LeRoy Kraster on 06 15 2009
Lower price? Same GREAT stuff. In fact now they include the chain tensioner. Awesome, but first shift kit is still fine, but rather than transfer it to my new bike, I just bought a new shifter kit.
Posted by Matt Lee on 05 20 2009
This kit is worth every penny that you will pay for it. Built very well, installs easily (with mechanical common sense) and takes a lickin and keeps on tickin. Paul and Jim have put a lot of thought into this kit and they stand behind their products. The only thing that I have to add is, pop for the extra 30 bucks and buy the deluxe kit because you will just come back and buy the extra parts in the future anyway, I know cause I did and would have saved all that time I wasted staring at the mail box waiting for it to arrive and used it riding my bike.