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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17
The Stage 2 Performance Kit combines the popular Big Boss tuner with both our high performing intake and manifolds deliver the best mileage and pulling power while balancing air flow to and from the engine
For stubborn dirt and stains
One (1) Rebel Clay Bar
- Choose between light-bars that fit a 13" Air Cleaner or a 15" Air Cleaner
Featuring a premium new casting and internal components
BIG BOSS DETROIT DD15 CYLINDER HEAD X15 Exhaust The Stage 2 Performance KitAvailable for: 2013 2021 Detroit DD15 Engines Key Benefits New Casting, Not Remanufactured Quality Replacement Cylinder Head Loaded with High Quality Valves Springs Made in the USA Warranty: 1 Year Unlimited Mileage PDI Big Boss Detroit DD15 DD16 Cylinder heads are meticulously designed to surpass the most demanding expectations, making them the perfect choice for heavy duty applications in trucking, construction, agriculture, and more.