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  • Hexagonal magnet screw
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    KOSO

    Hexagonal magnet screw

    $11.99

    KOSO Hexagonal magnet screw

    $11.99
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  • Mini 4 Tachometer
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    KOSO

    Mini 4 Tachometer

    $105.99

    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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    $105.99
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  • GEAR Indicator for Harley-Davidson
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    KOSO

    GEAR Indicator for Harley-Davidson

    $260.99

    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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    $260.99
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  • EGT Weld on bushing
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    KOSO

    EGT Weld on bushing

    $43.99

    fits all EGT sensors Stainless steel

    $43.99
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  • EGT Clamp 60-80mm
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    KOSO

    EGT Clamp 60-80mm

    $20.99

    EGT Clamp 60-80mm

    $20.99
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  • EGT Clamp 40-60mm
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    KOSO

    EGT Clamp 40-60mm

    $20.99

    EGT Clamp 40-60mm

    $20.99
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  • External thumb switch pour RX-2NS
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    KOSO

    External thumb switch pour RX-2NS

    $36.99

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

    $36.99
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  • AC/DC converter
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    KOSO

    AC/DC converter

    $65.99

    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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    $65.99
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  • Adjustable RPM signal filter
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    KOSO

    Adjustable RPM signal filter

    $46.99

    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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    $46.99
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  • Bung, cap and washer kit
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    KOSO

    Bung, cap and washer kit

    $31.99

    3 pieces kit includes: Bung Cap Aluminum washer

    $31.99
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  • O2 adapter for 2-stroke engine only
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    KOSO

    O2 adapter for 2-stroke engine only

    $63.99

    For 2 stroke engine only

    $63.99
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    KOSO

    Race type O2

    $134.99

    KOSO Race type O2

    $134.99
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  • Cylinder head temperature sensor 0-150°C
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    KOSO

    Cylinder head temperature sensor 0-150°C

    $39.99

    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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    $39.99
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  • Water Hose Adapter
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    KOSO

    Water Hose Adapter

    from $43.99

    KOSO Water Hose Adapter

    from $43.99
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  • EGT sensor fast response (clamp included)
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    KOSO

    EGT sensor fast response (clamp included)

    $166.99

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

    $166.99
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  • Magnet 6mm diam. x 5mm high
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    KOSO

    Magnet 6mm diam. x 5mm high

    $3.99

    sold as a single unit

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

    Hard cable speed sensor for EX-02 Japanese applications

    $57.99

    Screw Type For EX-02 Japanese Applications only

    $57.99
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  • X-1 Boost meter
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    KOSO

    X-1 Boost meter

    $320.99

    Today, many horsepower enthusiasts are upgrading their engine with turbo or supercharger. For this reason, we came up with this basic X‑1 boost gau...

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    $320.99
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  • PROTON Water temperature meter with adapter
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    KOSO

    PROTON Water temperature meter with adapter

    $94.99

    KOSO PROTON Water temperature meter with adapter  

    $94.99
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  • PROTON Water temperature meter
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    KOSO

    PROTON Water temperature meter

    $81.99

    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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    $81.99
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  • MINI 3 Dual temperature
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    KOSO

    MINI 3 Dual temperature

    $187.99

    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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    $187.99
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  • DL-01T Water temperature meter
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    KOSO

    DL-01T Water temperature meter

    $201.99

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

    $201.99
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  • SUPER SLIM STYLE Thermometer °F version
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    KOSO

    SUPER SLIM STYLE Thermometer °F version

    $81.99

    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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    $81.99
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  • SUPER SLIM STYLE Thermometer °C version
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    KOSO

    SUPER SLIM STYLE Thermometer °C version

    $81.99

    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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    $81.99
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  • I-GEAR Thermometer °C version
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    KOSO

    I-GEAR Thermometer °C version

    $81.99

    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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    $81.99
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  • DL STYLE Universal Tachometer
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    KOSO

    DL STYLE Universal Tachometer

    $246.99

    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...

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    $246.99
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  • HD-01S Speedometer (km/h) for Harley-Davidson
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    KOSO

    HD-01S Speedometer (km/h) for Harley-Davidson

    $275.99

    The HD‑01S for Harley‑Davidson® features a speedometer, an odometer, and a tripmeter. This instrument will fit the OEM speed sensor. Want something...

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    $275.99
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  • XR-01S Speedometer
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    KOSO

    XR-01S Speedometer

    $202.99

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

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    $202.99
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  • XR-01 Speedometer
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    KOSO

    XR-01 Speedometer

    $185.99

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

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    $185.99
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  • DB-01R+ Speedometer
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    KOSO

    DB-01R+ Speedometer

    $350.99

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

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    $350.99
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  • EX-02 Enduro Speedometer
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    KOSO

    EX-02 Enduro Speedometer

    $159.99

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

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    $159.99
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  • HD-04 Multifunction Meters for Harley Davidson Sportster 2014+/Dyna 2012+
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    KOSO

    HD-04 Multifunction Meters for Harley Davidson Sportster 2014+/Dyna 2012+

    $579.99

    You can now customize your sportster with our high‑quality plug & play meter that is equipped with a 8 color changeable LCD display. Its steppe...

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    $579.99
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  • HD-04 Multifunction Meters for Harley Davidson Sportster 04-13/Dyna 04-11
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    KOSO

    HD-04 Multifunction Meters for Harley Davidson Sportster 04-13/Dyna 04-11

    $579.99

    You can now customize your sportster with our high‑quality plug & play meter that is equipped with a 8 color changeable LCD display. Its steppe...

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    $579.99
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  • RS-2 Multifunction meter and Data recorder
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    KOSO

    RS-2 Multifunction meter and Data recorder

    $558.99

    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...

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    $558.99
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  • DB-02 Digital LCD Meter
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    KOSO

    DB-02 Digital LCD Meter

    from $355.99

    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 ...

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    from $355.99
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  • DL-03A, Air/Fuel ratio & RPM data logger
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    KOSO

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

    from $579.99

    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...

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    from $579.99
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