Airaid Filter Co.
What: Cold-air intake
Wares: Includes full-length intake tube, cold-air dam, and high-flow premium filter.
Words: "Provides superior airflow and filtration."
What: Brute Force air-intake kit
Wares: Includes DRYFLOW synthetic air filter and steel heat shield.
Words: "Deliver more torque and horsepower while providing superior filtration and performance."
Wallet: MSRP is $340
American Expedition Vehicles (AEV)
What: Hemi Builder kit
Wares: All the nonfactory components; premium kit also includes ProCal module and exhaust with cat.
Words: "Makes the conversion to a 5.7L or 6.1L Hemi simple."
Wallet: Starts at $3,999
Advanced FLOW engineering (aFe)
What: Mach Force-XP after-cat exhaust
Wares: 3-inch mandrel-bent stainless steel construction, welded-on bayonet-style hangers, and all hardware.
Words: "This high-tuck system is designed to fit with most popular suspension lifts."
Wallet: MSRP is $431
What: Pro Rock Series supercharger kit
Wares: Includes fuel-management system, MAP sensor bypass, and sequential blowoff valve.
Words: "125hp gain, 7psi boost, and 125 lb-ft torque gain."
What: Performance exhaust
Wares: Includes stainless steel construction, Ultra Flo straight-through polished stainless steel muffler, and 409-grade stainless corrosion protection.
Words: "Eliminates the position of the OE muffler, providing additional off-road clearance."
Wallet: Less than $350
PaceSetter Performance Products
What: TFX performance exhaust
Wares: Low-backpressure, fully welded muffler, 16-gauge, mandrel-bent 2 1/2-inch-diameter tubing, self-clamping 3 1/2-inch-diameter outlet, and polished/chrome plated stainless steel tip.
Words: "The sum of it all is an increase in engine efficiency and a great exhaust note from the JK."
Wallet: MSRP is $319
What: High-flow intake system
Wares: Replaces the original intake assembly, including airbox, air filter, and intake tube, high-flow air filter, steel heatshield, and roto-molded polyethylene tube are provided.
Words: "Increases horsepower by 8.17 hp at 4,807 rpm over the Wrangler's stock configuration."
Wallet: MSRP is $375
Gale Banks Engineering
What: PowerPack System
Wares: Includes Ram-Air intake, high-flow Monster exhaust, TorqueTubes exhaust manifolds, and tailpipe tip.
Words: "Contains all of Banks' . . . JK airflow upgrade products in one package."
Wallet: Starts at less than $1,500