Koso H-D Tachometer with Stepper Motor - Harley Touring & Softail
About Koso
Koso builds instrumentation, gauges, heated grips and electronic accessories for motorcycles, with digital displays used widely in the custom V-twin scene.
The Koso H-D Tachometer is engineered specifically for Harley-Davidson motorcycles, offering stable and precise RPM readings even on vibration-prone V-twin engines. Featuring an advanced stepper motor, this tachometer ensures smooth needle response across all engine speeds. It integrates seamlessly with your bike's existing systems, working with OEM speed sensors for a hassle-free upgrade.
Why riders pick this
- Stable stepper motor for precise RPM readings
- Illuminated needle for night visibility
- Digital odometer and trip meter included
- Compatible with OEM Harley speed sensors
- Auto-scan on engine start
Designed for the demanding environment of Harley-Davidson motorcycles, this Koso tachometer provides not just reliable performance but also enhanced visibility. The illuminated needle ensures you can easily read your RPMs during night rides, while the built-in digital odometer and trip meter offer additional crucial information at a glance. Its compatibility with OEM speed sensors means you won't need complex adapters or modifications, making it a direct and effective replacement or upgrade for your stock gauge.
Precision and Visibility for Your Ride
- Stepper motor for stable and accurate needle response on V-twins
- Illuminated needle for clear visibility in low light conditions
- Digital odometer and trip meter displayed on an integrated LCD screen
- Works directly with existing OEM Harley-Davidson speed sensors
- Auto-scan function activates upon engine start-up
Engineered for Harley-Davidson Performance
Whether you're cruising on a Softail or logging miles on a Touring model, having a precise tachometer is key to understanding your engine's performance. The Koso H-D Tachometer is built to withstand the rigors of the road, providing consistent data that helps you optimize shifting and maintain your engine within its optimal power band. Its robust design and user-friendly features make it an excellent addition for any Harley rider looking for an upgrade.
Specifications
- Brand: Koso
- Manufacturer Part #: BB551B20
- Length: 4 in
- Width: 3 in
- Height: 4.75 in
- Weight: 0.922 lbs
- Country of Origin: China (Taiwan)
Common questions
Will this tachometer work with my stock Harley speed sensor?
Yes, this gauge is designed to work with OEM Harley-Davidson speed sensors without requiring adapters or modifications.
Does the needle move smoothly at idle and cruise?
Yes. The internal stepper motor stabilizes needle movement across all RPM ranges, ensuring a smooth and accurate display even on high-vibration V-twin engines.
Is the display backlit for nighttime riding?
Yes, the needle is illuminated, and the digital LCD odometer and trip meter are also backlit for clear visibility during night rides.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Koso |
| TYPE | Gauges/Meters |
| SKU | 27-5768 |
| WEIGHT | 0.92 lb |
