Go Back   ChinaRiders Forums > Technical/Performance > Street
Register FAQ Community Calendar Today's Posts Search
Reply
 
Thread Tools Search this Thread Display Modes
Old 10-03-2024, 07:12 PM   #1
PlagueOfFear   PlagueOfFear is offline
 
Join Date: Aug 2023
Posts: 12
My 2020 Boom Vader lost 4th gear today

Does anybody have a link to the gears and case gaskets for the 2020 boom vader? My bike lost 4th gear today doing 60 on the highway. It's my daily and I doordash on it and it's my only income so now I can't work until I find the parts and fix it. Please let me know if yall have any link for the gears and gaskets. I've put 10k+ miles on this thing in the last year and a half and I've fixed and replaced and upgraded everything on it including a new gas tank today after dealing with a year of it leaking. Thanks for real I need help yall.


 
Reply With Quote
Old 10-03-2024, 09:45 PM   #2
Bruces   Bruces is offline
 
Join Date: May 2018
Posts: 1,654
With that mileage I wouldn’t bother doing the tranny ,a brand new engine is pretty cheap and can be swapped in an hour or two .You can even upgrade to a bigger engine if you wish .


 
Reply With Quote
Old 10-03-2024, 10:58 PM   #3
dirtbkr188   dirtbkr188 is online now
 
dirtbkr188's Avatar
 
Join Date: Aug 2009
Posts: 577
Try reaching out to Pete at Kronik Racing he is the Boom Vader guru


 
Reply With Quote
Old 10-03-2024, 11:27 PM   #4
PlagueOfFear   PlagueOfFear is offline
 
Join Date: Aug 2023
Posts: 12
Quote:
Originally Posted by Bruces View Post
With that mileage I wouldn’t bother doing the tranny ,a brand new engine is pretty cheap and can be swapped in an hour or two .You can even upgrade to a bigger engine if you wish .
I will swap when I can, but right now I can't afford to, I need the gears so I can go back to work.


 
Reply With Quote
Old 10-03-2024, 11:28 PM   #5
PlagueOfFear   PlagueOfFear is offline
 
Join Date: Aug 2023
Posts: 12
Quote:
Originally Posted by dirtbkr188 View Post
Try reaching out to Pete at Kronik Racing he is the Boom Vader guru
Thank you, I will.


 
Reply With Quote
Old 10-04-2024, 01:15 AM   #6
ProDigit   ProDigit is offline
 
Join Date: Aug 2013
Location: FL
Posts: 372
Quote:
Originally Posted by PlagueOfFear View Post
I will swap when I can, but right now I can't afford to, I need the gears so I can go back to work.
Time wise, a new engine is going to be quickest, and money wise, a new engine costs $200-300 or so, depending on where you buy them.

If you rebuild your transmission, it'll take lots of difficulty possibility of things going wrong, and time.
In the 2+ days you'll probably need to fix this, you can install the new engine and be earning. Don't tell me you can't make $100 a day.
And a new engine will last you a lot longer than a rebuilt transmission.
__________________



 
Reply With Quote
Old 10-04-2024, 02:43 AM   #7
PlagueOfFear   PlagueOfFear is offline
 
Join Date: Aug 2023
Posts: 12
Quote:
Originally Posted by ProDigit View Post
Time wise, a new engine is going to be quickest, and money wise, a new engine costs $200-300 or so, depending on where you buy them.

If you rebuild your transmission, it'll take lots of difficulty possibility of things going wrong, and time.
In the 2+ days you'll probably need to fix this, you can install the new engine and be earning. Don't tell me you can't make $100 a day.
And a new engine will last you a lot longer than a rebuilt transmission.
I understand that and I'd buy a whole new engine. I have several of them in my amazon cart, at least one for each bike I own. I just paid all my bills so I have 100bucks to work with and a couple days to cool down and fix the bike up. I can make a hundred a day when I have all 4 gears, but I live in a rural town and the back roads to get to town are 60mph which I can't do in 3rd gear. I'll get out there tomorrow and try my hardest but I still need to know which gear set because I'm gonna crack the case open to see what broke and I bet I can fix it.


 
Reply With Quote
Old 10-04-2024, 08:43 AM   #8
TominMO   TominMO is offline
 
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,977
Any chance of changing your sprockets so that 3rd gear becomes like 4th gear?
__________________
2021 Lifan Xpect--sold
2022 Lifan KPX
1972 Honda CT90--The Carrot
1969 Honda CT90--The Tomahto
Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Nope, finally retired.
Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM
How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw
Question all authority.....think for yourself


 
Reply With Quote
Old 10-04-2024, 08:49 AM   #9
Bruces   Bruces is offline
 
Join Date: May 2018
Posts: 1,654
Over 10k miles on a Chinese pit bike engine and the tranny shit the bed ,if you tore it apart you might be able to fix the actual gear problem easy enough instead of replacing everything ,but financially and time wise it’s an unwise decision .You have already got more than the expected life out of that engine ,everything is now worn out and if tranny metal went through it and made it even worse ,you would need to replace everything to make it reliable again .
For $100.00 ,find a usable used engine ,and get one of those new engines out of your cart and into your hands asap .


 
Reply With Quote
Old 10-04-2024, 11:25 AM   #10
PlagueOfFear   PlagueOfFear is offline
 
Join Date: Aug 2023
Posts: 12
Quote:
Originally Posted by TominMO View Post
Any chance of changing your sprockets so that 3rd gear becomes like 4th gear?
I have 17/30 setup and 3rd gear gets it up to almost 50 but that's in the red line. I'd have to go up to 18 or 19 on the front bc there's no smaller rear that I know of. I had a 16 on the front when 4th gave out but I switched it back to the 17 bc I know that will stretch 3rd gear out to go faster.


 
Reply With Quote
Old 10-04-2024, 12:53 PM   #11
Mudflap   Mudflap is offline
 
Join Date: Sep 2014
Posts: 1,930
What are the symptoms? Could be something simple like the shift drum indexer.


 
Reply With Quote
Old 10-06-2024, 06:20 PM   #12
PlagueOfFear   PlagueOfFear is offline
 
Join Date: Aug 2023
Posts: 12
Quote:
Originally Posted by Mudflap View Post
What are the symptoms? Could be something simple like the shift drum indexer.
First, second, and third gear all work just fine, but 4th gear just free spins like neutral.


 
Reply With Quote
Old 10-07-2024, 10:00 AM   #13
4T_Goblin   4T_Goblin is offline
 
4T_Goblin's Avatar
 
Join Date: Jun 2021
Posts: 255
4-speed manual gear assembly are available on Amazon and Ali Express. I replaced my clutch pack and transmission when I upgraded to a 141bbk after I threw my bike through a loop. Both of these items came from Amazon.
Transmission
https://www.amazon.com/gp/aw/d/B01E8...b_b_asin_title

Clutch pack
https://www.amazon.com/gp/aw/d/B00UJ...b_b_asin_title

Fixing what you have is good option if you don't have room for a spare engine. It worked for me.
__________________
2020 Vader X-Pro X-7
2019 Kawasaki Ninja ex400
2022 Lifan KPX 250


 
Reply With Quote
Old 10-07-2024, 01:27 PM   #14
PlagueOfFear   PlagueOfFear is offline
 
Join Date: Aug 2023
Posts: 12
Thank you very much 4T Goblin, this is exactly what I needed to know. There are so many different sets of gears and I had no way of knowing which one I need because all the search results are just so generic. I appreciate your help.


 
Reply With Quote
Old 10-07-2024, 04:25 PM   #15
4T_Goblin   4T_Goblin is offline
 
4T_Goblin's Avatar
 
Join Date: Jun 2021
Posts: 255
No worries, hope this info helps. Don't forget to inspect your clutch mechanism at the handle bars and case. As for gaskets, those can also be found on the same places. Generally the gray gaskets are for 125cc and under. Green gaskets are for yx140. Make sure to pick up a couple sets in case one rips.
__________________
2020 Vader X-Pro X-7
2019 Kawasaki Ninja ex400
2022 Lifan KPX 250


 
Reply With Quote
Reply

Tags
2020, boom vader, gaskets, gears



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:48 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.