NGK BPR7HS Spark Plug #6422 | 2-Stroke 50cc-110cc

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)

Compatible Models:

• 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

California Prop 65 Warning: www.p65warnings.ca.gov