Skip to content
  • Mini 4 Tachometer
    KOSO

    Mini 4 Tachometer

    $98.99

    Our Mini4 tachometer uses an LCD screen powered by an inner CR 2032 changeable battery that allows installation on any vehicle. With the small, com...

    View full details
    $98.99
  • GEAR Indicator for Harley-Davidson
    KOSO

    GEAR Indicator for Harley-Davidson

    $242.99

    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...

    View full details
    $242.99
  • EGT Weld on bushing
    KOSO

    EGT Weld on bushing

    $38.99

    fits all EGT sensors Stainless steel

    $38.99
  • EGT Clamp 60-80mm
    KOSO

    EGT Clamp 60-80mm

    $18.99

    EGT Clamp 60-80mm

    $18.99
  • EGT Clamp 40-60mm
    KOSO

    EGT Clamp 40-60mm

    $18.99

    EGT Clamp 40-60mm

    $18.99
  • External thumb switch pour RX-2NS
    KOSO

    External thumb switch pour RX-2NS

    $33.99

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

    $33.99
  • AC/DC converter
    KOSO

    AC/DC converter

    $60.99

    This small AC/DC Converter made of aluminum will convert AC power into DC power. The AC/DC converter’s compact size and strong resistance make it t...

    View full details
    $60.99
  • Adjustable RPM signal filter
    KOSO

    Adjustable RPM signal filter

    $43.99

    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...

    View full details
    $43.99
  • Bung, cap and washer kit
    KOSO

    Bung, cap and washer kit

    $29.99

    3 pieces kit includes: Bung Cap Aluminum washer

    $29.99
  • O2 adapter for 2-stroke engine only
    KOSO

    O2 adapter for 2-stroke engine only

    $59.99

    For 2 stroke engine only

    $59.99
  • KOSO

    Race type O2

    $116.99

    KOSO Race type O2

    $116.99
  • Cylinder head temperature sensor 0-150°C
    KOSO

    Cylinder head temperature sensor 0-150°C

    $32.99

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

    View full details
    $32.99
  • Cylinder head temperature sensor 0-250°C
    KOSO

    Cylinder head temperature sensor 0-250°C

    $37.99

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

    View full details
    $37.99
  • Water Hose Adapter
    KOSO

    Water Hose Adapter

    from $39.99

    KOSO Water Hose Adapter

    from $39.99
  • EGT sensor fast response (clamp included)
    KOSO

    EGT sensor fast response (clamp included)

    $149.99

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

    $149.99
  • Hexagonal magnet screw
    KOSO

    Hexagonal magnet screw

    $10.99

    KOSO Hexagonal magnet screw

    $10.99
  • Magnet 6mm diam. x 5mm high
    KOSO

    Magnet 6mm diam. x 5mm high

    $3.99

    sold as a single unit

    $3.99
  • Hard cable speed sensor for EX-02 Japanese applications
    KOSO

    Hard cable speed sensor for EX-02 Japanese applications

    $53.99

    Screw Type For EX-02 Japanese Applications only

    $53.99
  • PROTON Water temperature meter with adapter
    KOSO

    PROTON Water temperature meter with adapter

    $87.99

    KOSO PROTON Water temperature meter with adapter  

    $87.99
  • PROTON Water temperature meter
    KOSO

    PROTON Water temperature meter

    $75.99

    The Proton water temperature meter will provide you with a precise reading of your engines coolant temperature. Supplied with a 1/8 BSP sensor, ...

    View full details
    $75.99
  • MINI 3 Dual temperature
    KOSO

    MINI 3 Dual temperature

    $174.99

    This compact and lightweight Mini 3 dual temperature meter features two temperatures output. This meter can give you precious information such as...

    View full details
    $174.99
  • DL-01T Water temperature meter
    KOSO

    DL-01T Water temperature meter

    $199.99

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

    $199.99
  • SUPER SLIM STYLE Thermometer °C version
    KOSO

    SUPER SLIM STYLE Thermometer °C version

    $74.99

    Our Super Slim Style series is one of our best seller because its small and compact size makes it very easy to install at almost any location on th...

    View full details
    $74.99
  • I-GEAR Thermometer °C version
    KOSO

    I-GEAR Thermometer °C version

    $75.99

    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 ...

    View full details
    $75.99
  • DL STYLE Universal Tachometer
    KOSO

    DL STYLE Universal Tachometer

    $229.99

    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...

    View full details
    $229.99
  • XR-01S Speedometer
    KOSO

    XR-01S Speedometer

    $188.99

    Thinner and lighter than its previous version, the XR‑SA speedometer, our innovative XR‑01S speedometer most importantly features a larger, higher ...

    View full details
    $188.99
  • XR-01 Speedometer
    KOSO

    XR-01 Speedometer

    $172.99

    Thinner and lighter than its previous version, the XR‑S speedometer, our innovative XR‑01 speedometer most importantly features a larger, higher qu...

    View full details
    $172.99
  • RX-2 GP Style Speedometer
    KOSO

    RX-2 GP Style Speedometer

    $564.99

    The RX‑2 is one of Koso signature gauge. Its unique color changeable backlight makes it a very popular instrument. The illuminated needle with LED ...

    View full details
    $564.99
  • DB-01R+ Speedometer
    KOSO

    DB-01R+ Speedometer

    $325.99

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

    View full details
    $325.99
  • EX-02 Enduro Speedometer
    KOSO

    EX-02 Enduro Speedometer

    $148.99

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

    View full details
    $148.99
  • TNT-01 Multifunction meter for Harley-Davidson
    KOSO

    TNT-01 Multifunction meter for Harley-Davidson

    from $329.99

    SpeedometerR: 0 ~ 225 MPH (0 ~ 360 km/h)U: MPH or km/h OdometerR: 0 ~ 99,999 miles (km)U: 1 mile (km) Tripmeter A/BR: 0 ~ 999.9 miles (km)U...

    View full details
    from $329.99
  • TNT-02 64mm Multifunction meter
    KOSO

    TNT-02 64mm Multifunction meter

    $299.99

    With its vintage look, our TNT‑02 is the perfect meter for all Café racers and special project bikes that require a small multifunction meter. Thi...

    View full details
    $299.99
  • RS-2 Multifunction meter and Data recorder
    KOSO

    RS-2 Multifunction meter and Data recorder

    $519.99

    The new RS-2 meter is a complete multifunction meter that is focused on the serious rider who likes to log their data to improve riding skills. You...

    View full details
    $519.99
  • DB-02 Digital LCD Meter
    KOSO

    DB-02 Digital LCD Meter

    from $329.99

    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 ...

    View full details
    from $329.99
  • DL-03A, Air/Fuel ratio & RPM data logger
    KOSO

    DL-03A, Air/Fuel ratio & RPM data logger

    from $539.99

    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...

    View full details
    from $539.99
  • EGT Meter
    KOSO

    EGT Meter

    $341.99

    KOSO EGT-01 Single exhaust gas temperature

    $341.99
  • GEAR Indicator
    KOSO

    GEAR Indicator

    $229.99

    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...

    View full details
    $229.99
  • MINI 4 Engine hour meter
    KOSO

    MINI 4 Engine hour meter

    $88.99

    Our hour meter will allow you to track the motor running time and schedule your next engine maintenance. User-friendly and quick to install, this c...

    View full details
    $88.99
  • MINI 3 Clock and voltmeter
    KOSO

    MINI 3 Clock and voltmeter

    $134.99

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

    View full details
    $134.99
  • SUPER SLIM STYLE Voltmeter
    KOSO

    SUPER SLIM STYLE Voltmeter

    $59.99

    Our Super Slim Style Volt meter is a small and compact size meter and makes it very easy to install at almost any location on the bike. The blue or...

    View full details
    $59.99
  • SUPER SLIM STYLE Clock and voltmeter
    KOSO

    SUPER SLIM STYLE Clock and voltmeter

    $83.99

    This ultrathin Super Slim Style Clock & Volt Meter with blue digits will flash to warn you if the voltage is higher than 14.0 volts or lower th...

    View full details
    $83.99
  • PROTON Voltmeter
    KOSO

    PROTON Voltmeter

    $75.99

    The Proton volt meter will allow you to visualize the vital signs of your motor vehicles battery saving you from potential troubles. Volt m...

    View full details
    $75.99
  • MINI 3 Ammeter and voltmeter
    KOSO

    MINI 3 Ammeter and voltmeter

    $195.99

    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...

    View full details
    $195.99
  • I-GEAR Voltmeter
    KOSO

    I-GEAR Voltmeter

    $59.99

    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...

    View full details
    $59.99
  • DL-01V Voltmeter
    KOSO

    DL-01V Voltmeter

    $194.99

    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...

    View full details
    $194.99
  • CNC Voltmeter
    KOSO

    CNC Voltmeter

    $80.99

    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...

    View full details
    $80.99