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The Koso round slide KCR carburetor is designed to maximize the air/fuel ratio for a better performance for 4-stroke engine. Built from the best qu...

Our elegant grips made for ATV and snowmobile use a revolutionary heated structure that delivers heat faster than ever. The 5-level temperature con...

Our elegant grips made for ATV and snowmobile use a revolutionary heated structure that delivers heat faster than ever. The 5-level temperature con...

This Adjustable RPM Signal Filter helps to stabilize bouncy RPM reading on your meter.  Its adjustable function from 0 to 100 kΩ makes it ideal for...

Our Apollo heated grips are designed with an integrated adjustable thumb switch, which allows them to easily fit on most ATVs and snowmobiles on th...

Our Apollo heated grips are designed with an integrated adjustable thumb switch, which allows them to easily fit on most ATVs and snowmobiles on th...

3 pieces kit includes: Bung Cap Aluminum washer

This LED volt meter is built in a nice and compact CNC aluminum casing. The green, yellow and red LED will help you to know the strength of your ba...

The DB-03R is a multifunction meter with a modern casing that provides necessary critical readings. The DB-03r features all standard indicators nee...

The DB-03R is a multifunction meter with a modern casing that provides necessary critical readings. The DB-03r features all standard indicators nee...

Our DB‑01R+ multifunction meter is an upgraded version of our popular DB‑01R multifunction meter. Perfect for motorcycles, street fighters or dual‑...

This DB‑02 multifunction meter was especially made to fit your off‑road needs. Its small inner battery makes it usable on all dirt bikes and ATV’s ...

The DL style meter serie is built using a reverse LCD screen that gives it a unique look as they become completely dark when turned off. Another g...

Koso’s DL‑01 meters use a reverse LCD display so when the meter is turned off, the screen is deep black.

The DL-01V Volt meter will give you the status of your battery at all time. This voltage meter’s backlight makes it easy to read even at night. The...

The DL-03A is the newest addition into our lineup of multifunction meters which features air fuel ratio reading, RPM and playback ability to opti...

EGT Clamp 40-60mm

EGT Clamp 60-80mm

KOSO EGT-01 Single exhaust gas temperature

Fast Response (28-CKTYPEX) sensor. Clamp size : 40-60mm Clamp Included

fits all EGT sensors Stainless steel

Developed by Enduro riders and made especially for them, this EX‑02 speedometer is the perfect solution for all Enduro applications. Lightweight, c...

External Thumb Switch – for RX-2NS RPM Data Logger Fits on only RX-2NS RPM Data Logger For 7/8″ or 1″ handlebar

Gear indicatorR: N, 1, 2, 3, 4, 5, 6 Effective temperature range14 ~ 140 °F (‑10 ~ 60 °C) Effective voltageDC 12 V Meter standardJIS D0203 M...

Always wondering in which gear you’re in? Avoid this question by using our plug & play gear indicator. Lightweight, compact, easy to use and to...

Screw Type For EX-02 Japanese Applications only

KOSO Heated grip glue

Keep your hands warm and dry by using these new waterproof heated hand protectors. Made from multi-layers of the best quality material available on...

Keep your hands warm and dry by using these new waterproof heated hand protectors. Made from multi-layers of the best quality material available on...

KOSO Hexagonal magnet screw

The small and compact size of the i-Gear thermometer makes it very easy to install at almost any location on the ride. The blue or red illuminated ...

The small and compact size of the i-Gear Volt meter makes it very easy to install at almost any location on the bike. The blue or red illuminated d...

The KSR carburetor is based on PWK carburetor core but adapted for 4-stroke engines. It features a semi-flat D-style throttle valve that increases ...

sold as a single unit

This Mini 3 AMP & volt meter will give you the vehicle voltage and amps used. This meter can be very helpful especially when there is many elec...

This compact and lightweight Mini 3 clock & volt meter features a clock and also the vehicle voltage. This meter can be very helpful especially...