DRI 4-Stroke Bolt-on Kits are designed to provide the maximum horsepower increase while preserving reliability

Product Information:

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STAGE 1 Kit (S-1)
#BK4-70XX $779.00
INCLUDES: Complete Fat Boy 4 Exhaust System (with STD Muffler), Pro Flow Air Cleaner Kit (Pro Flow flange, K&N, Outer wear)
PERFORMANCE GAIN: 5+HP
INSTALLATION: 1-2 hours Stage 1 Power Kits are designed to work with most DRI engine kits.
Note: Air/Fuel Tuning must be changed on this kit. Kit does not include EFI piggyback style tuner. Customer must purchase separately or step up to STAGE 2 kit which includes fully programmed VORTEX ECU (best option)


STAGE 2 Kit
#BK4-700XX-VHP $ 1399.00
INCLUDES: S-1 Bolt on Kit , Complete Fat Boy 4 Exhaust System , Pro Flow Air Cleaner Kit (Pro Flow flange, K&N, Outerwear)& Vortex X10 ECU (engine control unit)
* Vortex ECU is a complete plug-in unit with 10 remapped fuel/spark maps programmed inside and ready to go
PERFORMANCE GAIN: 9 HP+
INSTALLATION: 2-3 Hours