Major Sparkplug Product Lineup – Motorcycle plugs

Motorcycle plugs

頭部短化

Compact head plug

W27EMR-C

Plug with compact insulator head
φ14×L19×20.6
HONDA / SUZUKI

M12シュラウド

φ12 shroud plug

X24GP-U

φ12×L (19 + 3)×18
HONDA

M12×19mm

φ12 ×19 mm plug

X24EPR-U

φ12×L19×18
HONDA / SUZUKI / YAMAHA

M10半ネジステンレスガスケット

φ10 plug with half-sized threads and stainless steel gasket

U24FER9S

φ10×L (6.3 + 12.7)×16
HONDA

M10半ネジ

φ10 plug with half-sized threads

U27FER9

With its wider spark gap of 0.9 mm compared to conventional plugs (0.6 to 0.7 mm), this plug has improved ignitability.
φ10×L (6.3 + 12.7)×16
HONDA

M10 2極

φ10 double-electrode plug

U31ETR

With two ground electrodes, heat resistance is improved.
φ10×L19×16
KAWASAKI / SUZUKI

M10×19mm

φ10 ×19 mm plug

U27ESR-N

Increasing the projection length by 0.5 mm improves resistance to fouling.
φ10×L19×16
YAMAHA / KAWASAKI / SUZUKI

M10×12.7mm

φ10 ×12.7 mm plug

U20FSR-U

φ10×L12.7×16
HONDA / YAMAHA / SUZUKI

φ8 plug

Y27FER-C

φ8×L (6.3 + 12.7)×13
HONDA

Actual products may differ from images shown.