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***Standard 2 Stroke Shifter Kit


Product Description

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:

Product Description
Requirements for using the kit
Bottom Bracket Descriptions
Installation Manual

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.

NOTE: If you are attempting to use this kit on a "FAT TIRE" bike please note the following additional items are required.
8 inch shaft
5/8 lock collar

Also note you will use the bottom bracket on your bike instead of the one that comes in the kit.


Product Reviews

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  1. Clamps 4 Star Review

    Posted by on 08 04 2019

    Really well made product except the wrong size clamps.

    SBP note: This may help explain the clam sizes:

  2. needs a better product description 4 Star Review

    Posted by 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

  3. SBP Jackshaft kit 4 Star Review

    Posted by 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.

  4. Get the grinder out 4 Star Review

    Posted by 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.

  5. broke first 100 yards 3 Star Review

    Posted by 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

    SBP response:
    It was noted the customer used a Standard Kit for a 69/80 cc engine which is contrary to the requirements of the kit.

  6. Awesome Product. 5 Star Review

    Posted by 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.

  7. works great, and well made 5 Star Review

    Posted by 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!

  8. bikes with motors 5 Star Review

    Posted by 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!!!

  9. quality part 5 Star Review

    Posted by on 06 20 2017

    Quality parts in package easy to install with there online instructions will b buying more parts

  10. 5 Star Review

    Posted by 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

  11. 5 Star Review

    Posted by 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

  12. 5 Star Review

    Posted by 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!

  13. 5 Star Review

    Posted by 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.

  14. 4 Star Review

    Posted by 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.

  15. 5 Star Review

    Posted by 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.

    Thank you

  16. 4 Star Review

    Posted by 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.

  17. 5 Star Review

    Posted by 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.

  18. 5 Star Review

    Posted by 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.

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