The stock cat back weighs in at 9 lb 5 oz with the graves only weighing in at 2 lb 9 oz for a savings of 6 lb 12 oz
It idle it clipped off the DB meter at 70 db with a max volume of 111 DB during the run
the sound from the exhaust is aggressive without being overly loud and it runs extremely well when combined with my flash from idle to redline in all throttle positions and rpm's with no hesitations or flat spots
Lets look at some dyno runs:
first up is the stock bike(red) vs graves slip on with flash (blue)
Kawasaki ZX4RR ECU FLASH
Please fill out the information sheet when sending in your ecu :
flash Information sheet to send in with your ecu - FLASHED BY VCYCLENUT
Settings adjusted in the flash are:
IAP fuel maps
TPS fuel maps
Ignition timing maps
Fly by Wire Throttle maps
Deceleration maps
Quick shifter kill times
Disable injector fuel cut
Disable top speed limiter
Lower fan temperature activation(optional)
Raise Rev Limiter (optional)
Disable PAIR Valve ( optional)
Disable EVAP ( optional)
GP shift ( optional)
All power modes and KTC settings work as stock after the flash
I am updating low power mode with new fueling settings but leaving the ignition timing and throttle maps as stock
full testing results can be seen here:
A full second tune can be added to lower power mode for MR12 or a fully different set up for an additional $150
Kawasaki ZX-4RR Cat-Back Slip-on Carbon Exhaust
Graves Motorsports Kawasaki ZX4-RR Carbon Slip-On (Cat Back). Graves Motorsports hand-made in the USA Carbon slip-on Silencer for the ZX4RR. This slip-on exhaust is new from the ground up with record breaking race developed features. Graves' precise engineering develops precision products that are designed to outlook, outperform and outlast the competition.
Graves' precise engineering develops precision products that are designed to outlook, outperform and outlast the competition. Graves Exhaust systems are designed for the elite rider seeking top of the line performance, fit, finish and value. This exhaust system was developed using the same technology that has powered the Graves Racing Team and supported racers to 31 Professional AMA National Championships including 9 Superbike Championship titles, 3 X-Games Championships, 2 SuperMoto Championships and 3 Pro Side x Side titles.
This product is intended for closed course competition use only. Use of this product for any other purpose is strictly prohibited. 1. “NOT LEGAL FOR SALE OR USE IN CALIFORNIA” / 2. “NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES” / 3. “LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES WHICH MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY”
New Silencer Design Featuring: Carbon Fiber Sleeve with Titanium End Cap and titanium exhaust tubing. Strapless can design mounts without the use of strap bands around the silencer by using a bracket that's structurally integrated. This design not only streamlines looks of your bike and saves weight.
Stock DB: Idle= 73DB / 5000RPM= 85DB
Graves Cat Back DB: Idle= 88DB / 5000RPM= 97DB
Weight:
- Stock Cat-Back = 9.2 lbs
- Graves Cat-Back = 3.4 lbs
Fitment: Kawasaki ZX4-RR 2019-2023
my testing of this system can be seen here:
