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  • 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...

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    $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...

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    $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
  • 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...

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    $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...

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    $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...

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    $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...

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    $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, ...

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    $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...

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    $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 °F version
    KOSO

    SUPER SLIM STYLE Thermometer °F 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...

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    $74.99
  • 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...

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    $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 ...

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    $75.99