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Replaces the restrictive intake tract, filter, and exhaust system.
Free of baffles or other internal restrictions.
Mandrel bent header pipe.
Deep throaty exhaust note.
Built-in spark arrestor.
Outstanding visual appeal.
Mirror finish stainless steel header pipe and canister.
Anodized billet aluminum endcaps.
Endcap color is a deep satinORANGEBLUE or GREEN. (Orange currently out of stock)
Let us know what color you'd like during checkout. We send out orange by default.
Installs in minutes.
Please see below for known compatible 150cc models. UNI Filter Oil must be used on the filter. We highly recommend adding the 16oz bottle of UNI oil to your order if you don't already have bottle. Motor oil or K&N filter oil should not be used.
Stock 150cc mufflers are highy restrictive. If you take one apart, you'll find various baffles and internal tubes which bend 180 degrees inside the muffler - creating a maze for the exhaust gasses to navigate outward and costing performance. The hammerhead exhaust in this kit eliminates all of those restrictions with it's single straight-through internal passage.
New Jets Included
New idle jet included
New main jet included
Jets sizes supplied per your request.
Since the airflow of the engine is significantly increased with this kit, rejetting the carburetor is required. New jets are included in this kit (you can request the jet size you would like, or we can send you an estimated size per elevation and other known weather factors at your zipcode).
If you don't know much about selecting the right jets for your machine, don't worry. Please contact us for assistance in determining the right jet sizes to be sent with your kit.
Confirmed fit on these models
Yerf Dog GX150 Twister Hammerhead (all 150cc models) Carter Talon 150cc Tomberlin Crossfire 150cc (without reverse) Blade 150cc Kinroad 150cc
The clamp hanger design practically makes this exhaust a universal-fit for most buggies. If you own a Crossfire 150R (with reverse) please contact us before purchasing.
This kit is not compatible with GY6-B engines unless a custom header is used, which we can not provide. GY6-B engines are uncommon and can be identified by looking at the valve cover. If your valve cover has only two bolts
holding it to the head, you have the GY6-B engine.
What's included HH Performance Exhaust System w/ mounting hardware. UNI high-flow air filter. Chrome intake velocity stack. Idle and main jets.