Long base candle NGK BR10ECS (very cold index)

The BR10ECS spark plug is a very specific model used on certain motorcycles and even snowmobiles! Its difference with a BR10 ES is simply the shape of the machined well (oblique ground electrode).

They are also used by some to reduce the compression ratio for break-in and for motorcycles that require more room volume on certain routes. With its machined shaft it is really specific. It can very well give on certain engines. Unlike the B10ES it is equipped with a resistor. It must therefore be put with a 5kΩ resistive suppressor.

This long base candle has a shorter porcelain, so prefer to use a shorter suppressor!