Featured Items

Tired of the flat gray look and want some new freshness? We have your answer! With these Honda OEM direct replacement plastic, 7 pieces in total, will add a new fresh look to your Grom. 

Parts: front fender, TDM boomerangs, side upper covers, side door long covers, 

This complete 170cc Big Bore kit with 4V Cylinder Head kit is the perfect add‑on for all horsepower enthusiast looking for performance! It includes : a 170cc ceramic coated cylinder, forged piston, performance camshaft, bearing, rocker arms, 4 valve cylinder head, intake manifold, gaskets, and more. All parts are made from high‑quality components for reliability and durability that allow you to put your mind at ease and ride with confidence!

This product is legal for closed-course competition use only; for racing vehicles (a competition vehicle not used on public highways). Intended for off-road use or race purposes; may not meet regulations of pollution controlled roads or highways. Not legal for vehicles registered and use in California.

WARNING

THIS IS AN AFTERMARKET PART BUILT FOR RACING PURPOSES ONLY. KOSO IS NOT RESPONSIBLE FOR ANY DAMAGES CAUSED TO THE PARTS, VEHICLE, OR TO YOURSELF AND OTHERS.  ENGINE PARTS ARE NOT UNDER WARRANTY NOR IS COLLATERAL DAMAGE OR COST OF LABOR, IN CASES OF MALFUNCTION.

Add a new look to the headlight by replacing the cover offered in two colors with these Honda OEM direct replacement plastic.

Fuel and Injection phase adjustable

Ignition timing and dwell time adjustable

Manifold Air Pressure base for inlet air amount calculation

Released engine speed limited

Environment temp and Baro compensation available

Free MAP download for various vehicle model (Honda, Yamaha, Suzuki, Kawasaki,Kymco, SYM…)

Increase almost 10% above power after calibration (depend on engine model)

Easy plugin (remove stock ECU and install RC1 ECU without any harness modified)

Same connector as stock ECU

RC1 ECU meet IP67 specs

Support Auto-Tune with aRacer AF1 wideband sensor module

Race & ECO MAP real time switch with iMode

Launch mode for racing start

Valet mode for anti thief or running usage

Aracer fuel management products are NOT compliant with the California Environmental Protection Agency (E.P.A.) or California Air Resources Board (C.A.R.B) for use on public roads or lands.Aracer products are for closed-course competition use only.

This product is legal for closed-course competition use only; for racing vehicles (a competition vehicle not used on public highways). Intended for off-road use or race purposes; may not meet regulations of pollution controlled roads or highways. Not legal for vehicles registered and use in California.