RK16091-1
Riva Racing
RIVA Racing water box for Kawasaki Ultra jet ski
Reference: RK160.. More details
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RIVA Racing water box for Kawasaki Ultra jet ski
Reference: RK16091-1
Developed on in-house Dyno and extensively tested on the water, this water box features rounded exhaust tips and tubes for optimal exhaust flow. A unique exhaust baffle will increase the low-end power and mid-range traction of your Kawasaki watercraft. Delivers up to 15 hp on modified engines as well as significant torque gains. High-strength aluminum construction will survive flashbacks and meltdowns. Powder coated to prevent corrosion. A must for modified engines. Includes detailed installation instructions.
Main characteristics:
Delivers up to 15 hp on modified boats.
Machined pipe flanges for reliable coupler retention.
Radiated exhaust pipes and tips.
Powder coated to prevent corrosion.
Additional application requirements:
2014 and newer Ultra 310: Eliminates restrictive second water box. Requires RIVA Free Flow Exhaust Kit (Part # RK16110 ) and RK15-2.38/3.25 Coupler.
2011 ~ 13 Ultra 300: Direct replacement for the original water box. Use with stock exhaust tailpipe or RIVA Free Flow Exhaust Kit (Part No. RK16090-08 ).
2008~10 Ultra 260/250 models: replaces the restrictive stock water box. Requires RIVA Free Flow Exhaust Kit (Part # RK16090-08 ).
2007 Ultra 250 Models: Eliminates restrictive 2nd water box. Requires RIVA Free Flow Exhaust Kit (Part # RK16090 ).
Note: Not designed for use with non-supercharged Ultra LX models except 2023 and up.
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