2 Stroke Exhaust on a 4 Stroke KTM 450 Honda 250 

I'm high asf too and thought of this hahaha

2 stroke running lean

The actually term for race build like this is 69 stroke if you run 2 stoke in it, it will become a 420 stroke.

6stroke?

6:16

8:05 to head sound

I don't know if you guys know but a 2 stroke exhaust is the shape it is because it gives compression to the motor of the 2 stroke

That shit sounded bad ass

Both ur bikes need some tlc my guy

bro the cr doesn’t even sound like there is mix in it

You're not supposed to mount 2stroke pipe on the end of the other one u should of put it like first one, becuz of resonance and stuff

yall high haha

two stroke has a bad air leak probbaby near the flywheel crank seal (yes i know im 4 years late)

Y’all put tape on an exhaust or is that not tape

Sickkkkkk!!

4+2 stroke=6 stroke

That’s not an exhaust it’s a muffler

Lol the ktm one my pipes busted there so sounds the same it's insane

what in the fuck was that lmao have fun guys also 2 stroke exhaust is no good for 4 stroke. It'll still run ok but when the positive pressure waves (high pressure) comes down the pipe and meets the expansion chamber, the step-up in pipe size send a negative pressure wave back towards the exhaust which is GOOD we want that it helps scavenge the cylinder the problem occurs when the pipe diameter at the end of the expansion chamber goes back to small. Sometimes I've heard this called a 'stinger' design i think?? So when theres a step down in pipe size the opposite happens, a positive pressure wave goes back towards the exhaust which on a 4 stroke just pushes exhaust gases back towards the cylinder, its not great for scavenging. The reason why this design is important for 2 strokes is because of efficiency. 2 strokes have ports instead of valves and theres more intake-exhaust overlap than 4 strokes so more intake charge escapes through the exhaust port. The positive pressure wave after the exhaust has expanded then got smaller helps to push some of the escaped air-fuel mixture back into the cylinder improving your power stroke and wasting less fuel. Its not a huge big deal tho, 4T doesnt care if its got a 2T exhaust it will run fine just not quite as well as with a properly designed 4T exhaust. This is relatively fine-tuning

I sounds like perpetual bongo drums

Sweet 😁😜👍 🤙🤙🤙🤙

These some fools 😂

Nice vid

Both bikes clapped

Every 2 stroke exhaust on four stoke bike video I see utilizes shit loads of duct tape lmao

how much for it

The 2 stroke sounds lean

3 stroke

Your hand is broke and how many bowls did you guys rip before this? Haha fire and duck tape is a no go. “I think you were supposed to hold it” hahaha bro

You should really clean your carb

The tape🙈

Lawnmower

What about the other way around

sounds like a fuckin race car 😂

Sound more like ktm rc 🤣

Uhm what is this

Wtf

WTF HHAHAA

Lol so much for scavanging aye?

I dont care about your hand.

these bikes are straight junk lol

Gay

3 stroke