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5 of 5 Za50 necessity March 24, 2019
taco eater : Jonathan Feldman from Oakland, CA United States  
Kittin your za50 and don't wanna grenade your transmission at high rpms? Yuuuuup. This is your guy.

Minor case grinding? Yup 2.0, it ain't too bad though. Doesn't take too long.

Theoretically you could go up to like 19/40 from the stock 18/40 and maybe you'd be safe in terms of za50 max rpm range but why risk it? 20/40 ( I'm actually at 20/37 But you get the idea ) is much more reasonable in terms of za50 longevity.

Additionally, when your gear out your za50 .. you can actually use first gear. It no longer acts as just a starter gear off the line. You can stay in first gear and climb hills with ease .. and if you're really good at tuning, get second gear to shift around 30 so you can actually cruise neighborhoods staying in first gear. Pretty cool.

Have fun and be safe.

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5 of 5 Large marge!! February 14, 2014
taco eater : Margarine from Clinton , CT United States  
Great quality and fit (with some grinding of the case obviously) I honestly would be scared to take out anymore material for the next sprocket up let alone the 22 tooth. This is the one to get!

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5 of 5 Big August 1, 2013
taco eater : analbumcover from WAYLAND, MA United States  
You can either use a dremel for 20 minutes and make it fit, or you can use a broken rasp for 2 hours if you're retarded like me. Had to add about 6 links to my chain to make it work.

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5 of 5 Super fast! April 19, 2011
taco eater : Noexit from Seattle  
20 minutes with a dremel and it fits. I have a 70cc K-Star, Tecno Estorl and 15mm Bing. With the stock rear sprocket, I still have good torque for climbing hills, but no more popping wheelies. I'll have to GPS the top speed, but it's fast.

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5 of 5 Push it June 15, 2010
taco eater : trickMETRIC from Grand Rapids, MI United States  
You can get this to work on an E-50 if you are real-real careful.

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5 of 5 chain game May 4, 2010
taco eater : cuperteenbro from Cupertino, CA United States  
i actually dremmeled it out a tad (za50) then just let an old chain do the rest, I was done in a flash. If you like to keep the rpms down this is good, or if your a baller and are topping out with 18x36 on your za, get this and go faster. I believe it got me around 68. Make sure your brakes, bearings, and everything else are solid before attempting stupid speed runs.

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