Those who have gone from 121 to 136

[SpecRTX]

Hey Guys. I'm deciding on making my RTX a 136. I know the Attaks are close to or equal to the top speed of stock Apexes. My question is, for those of you that have converted a 121 to a 136, have you lost any top end speed? In theory, you should. However, we all love to prove theories wrong. Any info would be great.

 

[1CrazySledder]

DO it. I did the same to my old RTX. If there was any top end to loose, I didn't notice it. I re geared tho. WAY better then a 121. I will never run a small track again.

http://www.ty4stroke.com/viewtopic.php? ... hlight=rtx

Go for it, you won't regret it.

-Vince

 

[SpecRTX]

1 C/S~

You definitely did a nice job on yours. You're making my decision much easier!

 

[1CrazySledder]

You'll enjoy it. It'll take a ride to get used to it, but after that, you'll be glad you did the conversion.

-1CS

BTW: Thanks for the comments. I'm doing an 07 Attak project now. Going to run a 144"

http://www.ty4stroke.com/viewtopic.php?t=43307

 

[bert]

how much $ too swicht 121- 136 ''??

 

[SpecRTX]

Ulmer has a kit for $270.00 w/o the track.

 

[Turtle]

I can provide you with a tunnel extension. See link to our websit in my signature.

Tracks USA is also a good source for rail extensions.

 

[timebomb]

stretched my viper to 136, best mod i ever did to it. love the 136, i'll never go 121 again. bought an attak last yr b/c i liked the viper 136 so much. here is a couple of pics of my viper 136 stretch.

 

[SpecRTX]

I guess now the only question is do I go with Rip Saw or Six Pitch Pred???

 

[FAMILYMAN]

http://www.ty4stroke.com/viewtopic.php? ... highlight=

try this link! I did my '07 rtx also.