Review on Denso 6039 Spark Plug by Justin Anderson
U-groove works well with 2-strokes
These forks work well with the 2-strokes I use them on. The U-groove acts as a channel for the fuel mixture to collect inside while also providing a clear area for the spark at the top of the plug. This eliminates the "trap" with 2 cycles. I always start well now, both hot and cold.
- Stylish and modern design
- Don't really like it, it's ok
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