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

Product Information:

STAGE 1 Kit $799.00 (S-1)

#BK4-4450 ('04-'05)
#BK4-4456 ('06-'16)

Includes: Complete Fat Boy 4 Exhaust System (with STD Muffler), Jet Kit, Pro Flow Air Cleaner Kit (Pro Flow flange, K&N, Outerwear). Excellent Start Up Performance Mods. Stage 1 Power Kits are designed to work with most DRI engine kits.
For a slightly more aggressive Bolt-On kit check out the DRI Stage 2 S-2 HPV Bolt Kits.

STAGE 2 Kit (S-2) $1349.00
#BK4-4450-VHP ('04-'05)
#BK4-4456-VHP ('06-'16)

Includes: S-1 Bolt on Kit (Complete Fat Boy 4 Exhaust System (with STD Muffler), Jet Kit, Pro Flow Air Cleaner Kit (Pro Flow flange, K&N, Outerwear), Vortex X10 CDI
Power Gains: 25-30% gain in HP