Motion Pro Compression Tester - 10mm 12mm 14mm Adapters - Harley & Indian V-Twin
About Motion Pro
Motion Pro builds control cables, specialty tools and service equipment for motorcycles, and is the name most shops reach for when a job needs the correct tool rather than an improvised one. Its cables are built to OE routing specifications.
The Motion Pro Compression Tester is an essential diagnostic tool for V-twin engines, allowing you to accurately measure cylinder compression. With a redesigned billet gauge manifold and three common spark plug adapters, this kit makes quick work of diagnosing engine health on your Harley or Indian Motorcycle. Keep tabs on your motor's performance and identify potential issues early.
Why riders pick this
- Accurately measure V-twin cylinder compression
- Billet gauge manifold with pressure release valve
- 0-300 psi analog gauge with protective boot
- Includes 10mm, 12mm, and 14mm spark plug adapters
- Quick disconnect fitting for easy adapter swaps
Consistent compression across cylinders is crucial for optimal V-twin performance. The Motion Pro Compression Tester provides a reliable way to check your engine's health, helping you identify worn rings, valve issues, or head gasket problems before they escalate. It's a must-have for any serious mechanic or rider performing engine diagnostics or tuning on their Harley-Davidson or Indian Motorcycle.
Reliable Engine Diagnostics
- Billet gauge manifold with integrated pressure release valve for accurate readings
- 0-300 psi precision analog gauge with protective rubber boot
- Three spark plug adapters: 10mm, 12mm, and 14mm for broad V-twin compatibility
- Integrated quick disconnect fitting for fast and repeatable hose swaps
- Nylon storage pouch keeps all components organized and protected
A Core Tool for V-Twin Maintenance
Whether you're troubleshooting a misfire, evaluating a used bike, or just performing routine maintenance, a compression test provides vital information about your engine's internal condition. The quick-disconnect fittings and included adapters mean you're ready to test most Harley and Indian models right out of the box. This Motion Pro kit is built for durability and precision, ensuring you get consistent results every time you check your V-twin's heartbeat.
Specifications
- Brand: Motion Pro
- Manufacturer Part #: 08-0651
- Length: 13.3 in
- Width: 6.69 in
- Height: 1.96 in
- Weight: 1.18 lbs
- Country of Origin: China (Mainland)
Common questions
What spark plug sizes does this compression tester work with?
This kit includes three adapters for 10mm, 12mm, and 14mm spark plugs, which covers most Harley-Davidson and Indian Motorcycle models.
Is a pressure release valve included with this compression tester?
Yes, the Motion Pro Compression Tester features a redesigned billet gauge manifold with an integrated pressure release valve for convenience and accurate testing.
Does this kit come with everything needed to perform a compression test?
Yes, the kit includes the gauge, billet manifold, all necessary hoses, and the three spark plug adapters, along with a nylon storage pouch.
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 | Motion Pro |
| TYPE | Tools |
| SKU | 57-8840 |
| WEIGHT | 1.18 lb |
