HOLIDAY SCHEDULE: We'll be closing early at 3:00 PM PST on Dec. 24 and will be closed on Dec. 25–26 in observance of Christmas. Wishing everyone a safe, happy, and wonderful holiday!
Lighten flywheel for Honda Grom 125. No waiting! These are in stock and ready to go!One of the best performance modification to get your Honda Grom 125 / MSX125 to...
The new KOSO performance camshaft for Honda Grom 2022+ will give you great results at high RPM. This camshaft can be used with a stock engine, but will even...
ProTaper Wireless Hour Meter Fully sealed housing to withstand the elements Simple and user-friendly design Wireless vibration-sensing technology Peel-and-stick installation Zip-tie grooves for added install security 3-year initial battery life...
KOSO 4 Valve Big Bore Piston and Rings ONLY Honda Grom 125 (Cylinder is NOT included)Replacement 4 Valve Piston and Rings for the KOSO 170cc 61mm bore. No cylinder is...
Replaces your Kawasaki Z125 Pro Valve Tappet Cover with a Breather Vent Kit.Kawasaki Z125 Pro Decompression vent replaces your valve tappet cover and allow excess crank case pressure to be...
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLESThe KOSO 4V Cylinder Head Kit for the 2014-2020 Honda Grom and 2019-2021 Honda Monkey is the...
KOSO BIG BORE KIT 150CC - Honda Grom / Monkey 125 (2022+) with 5 Speed Transmission. Made from the best components available on the market, the 150cc Big Bore kit...
428 Conversion - Driven Racing Steel Rear Sprocket Honda Grom / Monkey 125 (2022+) Made in USA! A 428 Chain is required to run this sprocket on a Honda Grom...
Chimera Engineering Heat Buster Tappet Valve Covers for KOSO 4 valves Cylinder Heads! Chimera designed these big block tappet covers so that they could pull heat out of the engine....
Koso's Mini-3 Air/Fuel Ratio meter is designed especially for Honda GROM 125 (2014-2021) using the OEM existing narrowband o2 sensor located on the right side of the cylinder head. Direct...
Piston Ring Set 64mm for Kawasaki Z125 165cc Honda Grom 186ccTB Piston Ring Set 64mm for Kawasaki Z125 165cc or Honda Grom 186ccNOTES:Aftermarket fuel controller and upgraded fuel injector is...
212cc Big Bore Kit for Zhongshen 190cc ZS190 EngineNOTICE: This product is NOT legal for sale, installation, or use on a pollution-controlled vehicle in the state of California. This product...
KOSO 61mm Replacement Forged Piston Kit 2 Valve Head - Honda Grom 125 NOT AVAILABLE FOR SALE OR USE IN CALIFORNIA. ANY ORDERS FROM CA RESIDENCE WILL BE CANCELLED...
For those who have the Kitaco Clutch Cover for the Honda Grom 125, KTC-1002, this is the Replacement O ring found in the kit for the included oil spinner delete...
After extensive and exhaustive dyno testing, Brock’s Performance is proud to introduce the all-new Honda Grom Velocity Stack. As most Grom owners have come to know, the OEM intake design...
The new KOSO racing air filter cover for 2022+ Grom models is not only easy to install, but it will increase the airflow, improve filtering efficiency and raise the engine...
Motul 300V Factory Line 100% Synthetic 4T 15W50 Ester Motor Oil - 1 Liter100% synthetic 4-Stroke motorcycle racing engine oil developed for Factory Teams. 300V Factory Line lubricant takes advantage...
212cc Zongshen 2 Valve Performance Crate Engine ZS190 Comes fully assembled and ready to go. Comes installed with Forged Wiseco Piston and a Ported and Polished Head for added Performance....
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES KOSO 4 Valve Head Replacement Camshaft - Honda Grom MSX 125 NOTES: Professional installation...
Chimera Dry Break Receiver Weld-On Flange! Will fit the most common single dry break female receivers on the market, such as IMS, Clarke, and RedHead. Customize an OEM gas tank...
Need to monitor your engine temperature? Koso's Mini 3 Cylinder Head Temperature meter is designed especially for 2014-2020 Honda GROM® which is the perfect addition for you. Its peak recall...
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES Koso Camshaft Kit - Honda Grom MSX 125 (2014-2020) 4 Speed Engine Koso Camshaft Kit...
OEM Honda Grom 125 Chain Tensioner Bolt Washer This is a one time use washer and we strongly you replace it every time the tensioner bolt is loosened. Made in...
Aracer iMode 5 Real Time Control Module. This is the control module is used for your Aracer RC Super X ECU only. Together you can control the fuel mapping of...
The aRacer X Flash Link Power Cable is compatible with all X series ECU's and enables safe ECU power-up outside of the chassis for computer tuning (using a laptop or...
