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View Full Version : rear 2020 Boom Vader Sprocket


daytonacat
11-11-2020, 06:30 PM
Folks;

I have probably over looked it some where in this forum, but what is the tooth count of the standard Vader Gen 2 grom clone rear sprocket?.
With a thrown out back I can not get down to do the counting myself.

Thanks in advance.

Carl

culcune
11-11-2020, 06:58 PM
I counted 34 on my son's Vader BD125-8, but might have missed one or two, or overcounted. Yours is the Gen 2, so possibly geared differently, but I couldn't see Baodiao bothering.

daytonacat
11-12-2020, 11:08 AM
thanks much guy.

Carl

RedCrowRides
11-12-2020, 09:00 PM
My 2018 Vader Gen 2 is also 34 tooth , i did not have to change the tooth count at all out back as i was able to do all the "tuning" i needed with just changing front sprockets, much less expensive and also less work , and Lord knows i am one lazy s.o.b. haha!

culcune
11-12-2020, 11:34 PM
My 2018 Vader Gen 2 is also 34 tooth , i did not have to change the tooth count at all out back as i was able to do all the "tuning" i needed with just changing front sprockets, much less expensive and also less work , and Lord knows i am one lazy s.o.b. haha!

Ok, so I did count correctly. It's not difficult to count with the chain on, but it isn't easy, either, so I was hoping I didn't miss any, lol. What is the stock front?

Big Bird
11-13-2020, 12:18 AM
Ok, so I did count correctly. It's not difficult to count with the chain on, but it isn't easy, either, so I was hoping I didn't miss any, lol. What is the stock front?
14t

culcune
11-13-2020, 10:52 AM
14t

Thanks! Is a 15t about as big as will fit on these bikes?

deadwood83
11-13-2020, 12:11 PM
Thanks! Is a 15t about as big as will fit on these bikes?


You can grind and make 17t work, but it;s ehhhhh. 16 fits without trouble. My old Hellcat came with 16 stock on the front.

Big Bird
11-13-2020, 12:56 PM
Thanks! Is a 15t about as big as will fit on these bikes? 16t is what I run. Seems to be the best all around performance wise. Mine tops out at about ~8500rpm @ 60-62mph gps on flat ground with no headwind. 17t is probably better for cruising at high speed but at a loss of hill climbing power and acceleration.

I did need to cut about an inch from the lower part of the sprocket cover to get rid of chain rubbing with the 16t.