84-85 1st get T-3 rear sprocket gearing solution.

[tecat-z]

Been looking for rear sprocket options for my T-3 and other than the common stock rear count of 42, options are few for our 1st gen t-3's. I currently run 13-38 sprockets and it works great for many places, however in the dunes i quickly run out of rpm's. I don't like going up on front since this really messes with power a lot more since it is the driver, and which has a more direct effect on pulling the machine. Well SIDEWINDER offers what they call t-6 aluminum rear sprockets for our first gens in 34,36,38,40,42 rear counts. Cost is $69. This is the only place that offers this that i have found. I am really sort of excited. Lightweight high strength aluminum is great if you don't do a lot of mud riding. And the cost is right in line with any high quality alloy sprocket for current MX bikes. So we do have some options which is good news. I talked to Mike an Sidewinder, located in St Charles, IL. 1-630-513-1000. Looks like a 36 will be ordered up here shortly.

[Tecate250]

Where did you get a 38 tooth sprocket? I too can only get the stock size. Atv dealers around here are pricks when it comes to old gear.

[BigGreenMachine]

Pretty sure early KX sprockets will fit the rear as well.

[nd4speed]

JT sprockets

JTR 1478
Available teeth numbers in: 30, 34, 36, 38, 40, 42, 43

An Alternative for:

JTR 478: 38, 42, 45

This sprocket is also available in alloy:

JTA 478: 40, 41, 42, 43, 44, 45, 46, 47

There are a bunch of Polaris quads from 1987-99 that use this rear sprocket.

[Maico]

www.sprocketspecialists.com

[tecat-z]

My rear sprocket is currently a JT. The 38 was the tallest that they offered when i ordered it. It's better than the 42, but i am also using 20in rear tires. As opposed to stock 42 and 22in tires. I think a 13-36 combo with 20in tires and the added power my t3 puts out will pull this combo pretty well. It seems as though tri-z and 250r sprockets are easy to find in a variety of sizes without looking to hard. Well it looks as though we have some options after all. They just have to be ordered directly from specialty outfit.

[BigGreenMachine]

Tecat-z, I run 14/38 JT sprockets and my bike on the KXT cylinder with intake/exhaust bolt ons and porting/38mm carb has NO problems pulling it all the way to top with 20 inch tires.

My front sprocket it pretty worn so I may go with a 15 tooth since I'm going with 18 inch tires this time around.

[Tecate250]

Im staying with the 22s. Im hopping to get a set of realtors for the tecate.

[BigGreenMachine]

Realtors are way too heavy and brutish for the Tecate. Get some mudlites or something like a surtrac from maxxis.

[cr480r]

My rear sprocket is currently a JT. The 38 was the tallest that they offered when i ordered it. It's better than the 42, but i am also using 20in rear tires. As opposed to stock 42 and 22in tires. I think a 13-36 combo with 20in tires and the added power my t3 puts out will pull this combo pretty well.

Going to a 14 tooth on the countershaft will give a nearly identical ratio and wont affect your chain length as much... also wears on the chain slider less, and doesnt force the chain to bend as tight of radius(therefore sapping less power), and they last longer than 12's or 13's due to more tooth contact... Also cheaper... I run a 15/42 for all of these reasons...

[nd4speed]

Anyone recall how many links are in their chain of they use 13/38 and stock swingarm length?

I have a new chain that has only like 87 or 88 links in it.

I have owned Maxxis Surtrack tires for like ten years and they are great tires IMO, but I don't think they come in anything smaller than 22".

Realators are heavy and rob power for sure. I have been told you'd hook up so well the chain would break- a lot.

[BigGreenMachine]

The stock chain is a 90 link, you may just barely fit it or it might be too short.