This E-tube has a slightly larger main bore and less air bleed holes providing a better fuel signal at the jet. Improves performance across the RPM range, but especially on bottom end and mid range. You will want a main jet between .035" and .037" and low speed jet around .024" depending on how much you can bore out the carb venturi and which cam you use. This tube is legal in both Superbox and BP. It is not permitted in Box Stock classes.
5 Reviews Hide Reviews Show Reviews
totally changed the bike performance and cheaper than kits ive seen other places
Upgrade is necessary when doing any performance mods. Much better response off idle.
I put the E tube in my predator 212, it worked as advertised. The engine now feels alive at low to mid range RPM. I paired it with the .36 jet to fix a lean sputtering problem at any RPM. The two work great together. The kart will spin the tires on take off now. Great product!
Good product, threw it on my predator with a .36 jet and now I get great response on the low end
This "E" tube is great for that extra power allowing more flow in the carb! Works perfect every time! Used them in several carbs now myself. Love it with a .36 main jet.