NGK B9ES / B10ES Spark Plug - Racing
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The NGK B9ES is a versatile and reliable spark plug, widely used on karts, racing motorcycles and high-performance engines that require consistent ignition and effective heat management. With a heat range of 9, M14 × 1.25 mm thread, long reach (~19 mm) and 20.8 mm hex, it offers an ideal balance between performance and durability.
The nickel centre electrode ensures stable combustion, while the washer seat (gasket seat) guarantees secure fitting. As it has no built-in resistor, it is advisable to pair it with a suitable spark plug cap to minimise any interference.
Key features:
- Product: NGK, world leader in spark plugs
- Model: B9ES
- Heat range: 9
- Thread: M14 × 1.25 mm
- Thread length: 19 mm
- Hex: 20.8 mm
- Electrode gap: ~0.7 mm
- Centre electrode: nickel
- Type: non-resistor (no built-in resistor)
- Seat: with washer (gasket seat)
- Applications: karts, motorcycles, high-performance engines
Recommended for use with spark plug cap code K188-H
A "classic" spark plug that remains a benchmark: simple, robust and compatible with a wide range of competition and road engines.
- Brand: NGK
- Code: K16-9
Available in 2 versions: choose from the menu.
Price includes VAT.
Shipping & returns
Shipping & returns
Tracked shipping across Europe. Orders ship within 24 hours (working days): delivery in 24/48 hours in Italy, 5/7 working days abroad. Returns accepted within 14 days of delivery for unused items in their original packaging (tyres must be unmounted and unused).
Need advice?
Need advice?
Not sure this part fits your engine or chassis? Ask us before ordering: we race karts too. For engine overhauls, tuning and chassis work visit our workshop page.
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