EDR Kawasaki Ninja 400 (EX400) + Z400 ninja Velocity Stacks 2018+ 990 **NOTE: Some rare Ducati models

**NOTE: Some rare Ducati models may be available but not listed

"Feature of RB Racing system only" NOT available with RB EVO systems

That is huge on these little guys

EDR Oil Fill Cap Plug is Pre-Drilled for Safety Wire

silicone hoses

EDR Kawasaki Ninja 400 (EX400) + Z400 ninja Velocity Stacks 2018+ 990 **NOTE: Some rare Ducati modelsUPDATED Version 6 for 2026 1 piece, no cut! The EDR Performance Ninja 400 & Z400 2018+ Velocity stack kit * All stacks are black (not red) Our Velocity are game changers. Dyno proven gains don't lie! Nearly 10% at the rear wheel! That is huge on these little guys! Developed in house on simulation software, the race track and then backed by dyno testing with real work data. Our stacks improve torque HP to smooth power delivery. Our stacks provide a