NGK
Description
The NGK BPR7HS is the industry-standard spark plug for 2-stroke 50cc–110cc scooters, ATVs, and small powersports engines. A 98% pure copper core delivers consistent ignition and superior heat dissipation, while the projected insulator tip resists carbon fouling during low-speed city riding. The integrated 5k Ohm resistor suppresses electromagnetic interference with digital displays and onboard electronics. Trivalent metal plating provides corrosion and anti-seize protection — no compound needed.
- Thread size: 14mm
- Reach: 12.7mm (1/2")
- Hex size: 20.6mm (13/16")
- Heat range: 7
- Resistor: 5k Ohm
- Core: 98% pure copper
- Insulator: Alumina silicate ceramic with corrugated ribs (flashover prevention)
- Plating: Trivalent metal (anti-seize, corrosion resistant)
- Genuine: Buddy 50, RoughHouse 50, Rattler 50/110, Black Cat
- Yamaha: Jog 50, Zuma 50, Vino 50 (2T), BW80 Big Wheel (1989–2011)
- Aprilia: Mojito 50, SR50 Ditech (1999–2004)
- E-Ton: Beamer 50, Matrix 50, Viper 50/70/90
- Polaris: Sportsman 90, Predator 50/90, Scrambler 50/90 (2001–2014)
- Suzuki: Quadsport 80 / LT80 (1987–2006)
- Many additional 2-stroke 50cc–110cc scooters, ATVs, go-karts, and pocket bikes
Product Diagrams
Features
Specifications
Thread Size: 14mm | Reach: 12.7mm (1/2") | Hex Size: 20.6mm (13/16") | Heat Range: 7 | Resistor: 5k Ohm | Core: 98% Copper | NGK Stock #: 6422 | SKU: SP17 | Weight: 0.15 lbs
Manuals / Install Instructions
Model Fitments
Genuine Buddy 50 / RoughHouse 50 / Rattler 50-110 | Yamaha Jog 50 / Zuma 50 / Vino 50 (2T) / BW80 (1989-2011) | Aprilia Mojito 50 / SR50 Ditech (1999-2004) | E-Ton Beamer 50 / Matrix 50 / Viper 50-90 | Polaris Sportsman 90 / Predator 50-90 / Scrambler 50-90 (2001-2014) | Suzuki LT80 (1987-2006) | Various 2-stroke 50cc-110cc scooters, ATVs, go-karts, pocket bikes
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period on eligible items
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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