“The results were much better than I expected! I was thinking at best that it might drop 5°, maybe 10° at most, but I saw over a 20° drop my first session with the MSV impeller.”-Mark Morrow
RZ350 Riders—It’s Time to Unleash the Beast!
There’s nothing more exhilarating than a high-performance upgrade that no one saw coming. MSV Racing is rewriting the rules of powersports cooling with the ultimate High Flow RZ350 Impeller/Shaft Kit—a must-have for riders who demand the best. Superior Cooling That Dominates the Competition Our kit easily out-flows and out-cools any other RZ350 impeller/shaft on the market, delivering +2.0 GPM more average flow vs OEM and +1.5 GPM more average flow vs aftermarket.
But the real game-changer? It keeps your engine up to 20ºF cooler! Racing-tested and proven: Mark Morrow—owner of Mark Morrow Road Racing School and Services, former Headmaster and creator of the AHRMA Academy of Road Racing—saw even cooler temps compared to OEM when testing at VIR Raceway! Boosted Performance for Maximum Efficiency By increasing coolant flow, this kit slashes cycle time between the engine and radiators, making heat removal faster and far more effective. Less overheating. More power.
Why This Kit Is a Must-Have
- Optimized Impeller: Precision-designed to enhance the RZ350 volute area for better flow and efficiency, crafted from 7075 T6-511 aluminum.
- Precision Shaft: Made from 304 stainless steel, featuring a reduced shank at the cooling port pass-through. Developed using FEA testing to maximize flow and minimize back pressure.
- DLC Coating: This shaft is coated with Diamond-Like Carbon (DLC) for extreme durability—three times harder than heat-treated steel, twice as hard as chrome. Zero shaft wear, ultra-low seal drag, and extended seal life guaranteed!
What’s in the Kit?
✅ Impeller
✅ Precision shaft
✅ Custom laser-cut gasket
✅ Koyo bearing If you want superior cooling, dramatically reduced heat soak, and race-proven results, MSV Racing’s High Flow Impeller/Shaft Kit is the upgrade you’ve been waiting for.
Upgrade today—keep your ride cool and ahead of the pack!
Mark Morrow –
I was skeptical this would help on my high strung rz350 powered roadracer, but I tried it anyway because I really don’t want to pay for and figure out how to fit a larger aftermarket radiator. The bike has an 85hp rz/banshee motor in it with custom 66mm bore cheetah cub top end, tm38 carbs, cool head with domes cut to run on 110 race gas, v force reeds and PVL ignition.
I wanted a true back to back test so I installed the MSV impeller on a spare clutch cover and brought it with me to a local track day, with the plan being to run the oem impeller for 2 sessions in the morning, swap the clutch cover during lunch and then run the MSV impeller in the afternoon. I used my local weather app to note the ambient temp before every session and used my GoPro to record the data from my dashboard shaping h2o temps live every session.
The results were much better than I expected! I was thinking at best that it might drop 5°, maybe 10° at most, but I saw half over a 20° drop my first session with the MSV impeller. This was in spite of the air temps being nearly 10° warmer in the afternoon than they were in the morning.
I highly recommend this product! Not only will you see an immediate drop in h20 temps, but it also features a much higher build quality and higher quality materials, so the shaft, impeller and seal will all last much longer than with an oem impeller.
Two thumbs up!!’