This is for the guys who wants a more crisper lively output from the TW, for me it made a HUGE difference in performance when it comes to acceleration and low end grunt, I'll say its about a 20% improvement in performance for me.
I did a lot of research with all the available options when I decided that it is time replace my carburettor and I decided to try out the Keihin carb that comes out standard on all Honda and Chinese bikes, also included is a built-in acceleration pump which gives the bike extra power when accelerating
The fact that this project will only cost you around $ US 70 makes this a win-win situation
The experiment was a huge success so this is the write-up for installation. Go to https://tw200forum.com/forum/performance-customization/44569-new-pumper-carburetor-t-dub.html for the original post.
You need to have patience for this project, this is a bit tricky and I covered all of the things that you need to do for this modification, if you have any questions feel free to pm me
First I'm going to run through the things that you need to buy for this project
Go to aliexpress.com and type "Keihin pz30 Carburetor + Twister + Cable" into the search box or Click Here
Choose a package in the result that has the carburetor, throttle cable and twist grip included, go ahead and order it
![]()
then you have to order the intake manifold
type the words "Carburetor Rubber Adapter Keihin pz30" and the order it
this is the right one that you must order
![]()
![]()
THIS IS THE WRONG MANIFOLD, DO NOT ORDER THIS ONE IT IS NOT GOING TO WORK
![]()
then you have to order the starter/ kill switch, type the words "Off-road motorcycle electric starter"
![]()
then you're going to have to wait anything between 2 weeks and 2 months for the spares to arrive, depending on whether you used the courier option or the send via postal service option
INSTALLATION PROCEDURE
Remove the seat and the fuel tank
Remove the old carb and the old throttle twister with the old cable
this is where the fun begins . . . . . .
you're going to have to trim down the two rubber boots and then glue them to each other
in the end, the two of them attached to each other must be about 1 1/2 inches (38 millimeters) long
be careful when sawing the old manifold because a replacement one will set you back $ 50
![]()
after sawing the rubber boots take them one at a time, put them on a piece of sand paper and sand them until the surfaces are even
![]()
this is how the two rubber boots look like afterwards
![]()
now we are going over to the other rubber boot, you're going to have to cut away the REAR boot so that when you put the carb against the rear boot when it is in position on the air box there will be a 1 1/2 inch gap in the FRONT between the carb and the engine so that you can fit the other two rubber boots also
![]()
now you're going to have to take the carb and hang it from the frame of the bike , I did it with isolation tape
![]()
the next step is to take duct tape and a tie-down, wrap the duct tape carefully around the carb inlet and boot outlet so that you have an airtight seal, this is the most straightforward and practical solution for me
![]()
![]()
buy a plumbing clamp and cut an aluminum sheet (I'm sure you can use an old tin can also) and get it ready to put it around the rubber boots
![]()
get yourself a tube of Loctite SI 5699 or something similar that is capable of sealing AND to withstand high heat temperature
![]()
apply the sealant all around the rubber boots on both sides and then also on the inside of the aluminum sheet
![]()
![]()
put the clamp wit the aluminum sheet on the inside around the rubber boots and tighten the clamp until there is a seal, not too tightly otherwise you're going to separate the rubber boots from each other
wait for at least 5 hours or preferably overenight for the silicone to harden properly so that there is an airtight seal and you will have a solid, reliable boot!
![]()
all that is left to do is to route the throttle cable and to attach the new throttle twister to the handle bar and you're ready to go
the finished product
![]()
![]()
![]()
I did a lot of research with all the available options when I decided that it is time replace my carburettor and I decided to try out the Keihin carb that comes out standard on all Honda and Chinese bikes, also included is a built-in acceleration pump which gives the bike extra power when accelerating
The fact that this project will only cost you around $ US 70 makes this a win-win situation
The experiment was a huge success so this is the write-up for installation. Go to https://tw200forum.com/forum/performance-customization/44569-new-pumper-carburetor-t-dub.html for the original post.
You need to have patience for this project, this is a bit tricky and I covered all of the things that you need to do for this modification, if you have any questions feel free to pm me
First I'm going to run through the things that you need to buy for this project
Go to aliexpress.com and type "Keihin pz30 Carburetor + Twister + Cable" into the search box or Click Here
Choose a package in the result that has the carburetor, throttle cable and twist grip included, go ahead and order it
then you have to order the intake manifold
type the words "Carburetor Rubber Adapter Keihin pz30" and the order it
this is the right one that you must order
THIS IS THE WRONG MANIFOLD, DO NOT ORDER THIS ONE IT IS NOT GOING TO WORK
then you have to order the starter/ kill switch, type the words "Off-road motorcycle electric starter"
then you're going to have to wait anything between 2 weeks and 2 months for the spares to arrive, depending on whether you used the courier option or the send via postal service option
INSTALLATION PROCEDURE
Remove the seat and the fuel tank
Remove the old carb and the old throttle twister with the old cable
this is where the fun begins . . . . . .
you're going to have to trim down the two rubber boots and then glue them to each other
in the end, the two of them attached to each other must be about 1 1/2 inches (38 millimeters) long
be careful when sawing the old manifold because a replacement one will set you back $ 50
after sawing the rubber boots take them one at a time, put them on a piece of sand paper and sand them until the surfaces are even
this is how the two rubber boots look like afterwards
now we are going over to the other rubber boot, you're going to have to cut away the REAR boot so that when you put the carb against the rear boot when it is in position on the air box there will be a 1 1/2 inch gap in the FRONT between the carb and the engine so that you can fit the other two rubber boots also
now you're going to have to take the carb and hang it from the frame of the bike , I did it with isolation tape
the next step is to take duct tape and a tie-down, wrap the duct tape carefully around the carb inlet and boot outlet so that you have an airtight seal, this is the most straightforward and practical solution for me
buy a plumbing clamp and cut an aluminum sheet (I'm sure you can use an old tin can also) and get it ready to put it around the rubber boots
get yourself a tube of Loctite SI 5699 or something similar that is capable of sealing AND to withstand high heat temperature
apply the sealant all around the rubber boots on both sides and then also on the inside of the aluminum sheet
put the clamp wit the aluminum sheet on the inside around the rubber boots and tighten the clamp until there is a seal, not too tightly otherwise you're going to separate the rubber boots from each other
wait for at least 5 hours or preferably overenight for the silicone to harden properly so that there is an airtight seal and you will have a solid, reliable boot!
all that is left to do is to route the throttle cable and to attach the new throttle twister to the handle bar and you're ready to go
the finished product
