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Our brand stems from a love of motorcycles and a passion for adventure sports. We provide safety, quality and value to motorcycle lovers around the world. Hope you like us, please confirm the size and model first, I wish you a happy life.
WOOSTAR 40mm Piston Ring Kit
High quality made,keep motorcycle with high performance
- REPLACEMENT FOR:Razz SH50||Aerox||2 Stroke 49cc 50cc Y-Zinger Jog Moped Scooter Dirt Bike;
- Compact structure, exquisite workmanship, high precision, good reliability.
- ALUMINUM ALLOY MATERIAL
- TOP SANDBLASTING TREATMENT
- HIGH RIGIDITY AND ULTRA-THIN PISTON SKIRT
High Temperature Resistance, Corrosion Resistance,and Use of High-End Quality
Eliminate The Casting Stress on The Top of The Piston and Prevent Deformation of The Piston Top Due to The Presence of Casting Stress Over Time. This Can Cause Engine Cylinder Expansion, Cylinder Pulling,and Excessive Wear.
Maintain a Deformation Rate Consistent with The Lower Cylinder Wall of The Hot Engine to Ensure That The Engine Does Not Experience Any Noise Increase or Power Decrease Faults During Hot Engine Operation; Reduce The Friction Area to Prevent Cylinder Pulling.
About WOOSTAR
WOOSTAR has been engaged in Automotive for more than 10 years.With over 200 staff,also we have rich experience and excellent product quality.The main products are recoil pull start,chain master link,carburetor,hand brake lever,ignition coil,intake gasket,sprocket,hand puller,rearview mirror and so on.
Variety of Products
About our types are: brake lever, clutch, sprocket, key switch, hand pull disc, clutch line, rectifier, oil switch, digital controller, chain, chain buckle, ball joint, engine, cylinder kit, etc.
Product Quality
WOOSTAR has professional equipment and experienced staff. Create every product with heart, and strictly control the quality of the factory. We are committed to bringing cost-effective and high-quality products to our buyers.
Craig Dettrey
Reviewed in the United States on August 13, 2024
No instructions with it. Used YouTube to see what direction the rings go. Installed everything correctly. No break-in instructions. Gave to worker it locked up and seized up after less than one hour of use. The rings and pistons were supposed to be matched to the head so why did the thing seize up?
Antonio Correa
Reviewed in Spain on December 17, 2024
Perfecto
Dog
Reviewed in Canada on March 3, 2023
Everything fit as shown
MikUpholster
Reviewed in the United States on April 10, 2023
Only able to use Rings,Jog pin, Clips Sahren 49cc motors. New Wrist pin won't fit in rod hole for jog pin. Old Wrist pin won't fit in new Woostar piston so had to use old piston that ended up being in decent shape. Rings worked fired up.
leonardo zorislav wittmann
Reviewed in the United Kingdom on August 11, 2022
good product comes just like the photo
mario
Reviewed in Canada on May 1, 2022
Installer dans'une debroussailleuse Jonsered, et fait le travail.
L'oublié de la maison amazone.
Reviewed in France on October 20, 2022
pour une débroussailleuse
Jason copenhafer
Reviewed in the United States on April 12, 2022
As you can see piston is not even same size as original the rings won’t even work on the old piston
ali al-fatal
Reviewed in the United States on March 5, 2021
Awesome product
Zach Ramos
Reviewed in the United States on October 25, 2021
I installed the piston rings on the piston and after doing so I was rotating the piston to check the rings and noticed a crack had formed along the wall of the piston. Since this is going into something that will be held at high rpm for long periods the crack renders the piston useless.
OLB
Reviewed in the United States on November 2, 2020
This is the wrong piston for a PW50, as others have stated.I was fighting with another Chinese garbage set, purchased via the other popular selling site, and those had mis-machined ring grooves. I found this in my stash of parts, and could not figure what it was for... right diameter, but way too short to be a PW50 piston. My purchase history showed I bought it here.Wrong for a PW50... you've been warned!
T D
Reviewed in the United States on January 11, 2020
Great
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