Accel High Performance C-Cut Copper Core Spark Plug - Harley Twin Cam & Sportster
About Accel
Accel parts and accessories are stocked at Vtwinbikers for Harley-Davidson and Indian Motorcycle applications. Every Accel item we list is new and sourced through authorized distribution. If you are not certain a part matches your year and model, use Shop by Bike or email our team before you order and we will confirm fitment first.
Ignite your Harley Twin Cam or Sportster with the Accel High Performance C-Cut Copper Core Spark Plug. This advanced plug features a unique C-Cut design that generates a hotter, faster-expanding spark for more complete combustion.
Why riders pick this
- C-Cut copper core for a hotter, more efficient spark
- Prevents spark shrouding for consistent ignition
- Achieves a larger flame nucleus without wider gap
- Delivers improved throttle response and fuel economy
- Reduces emissions through more complete combustion
Engineered to prevent spark shrouding, the Accel C-Cut copper core spark plug positions the spark above the electrode midpoint, ensuring a larger flame nucleus without increasing the spark gap. This optimized ignition leads to a more thorough burn of the air-fuel mixture, translating directly into improved throttle response and better fuel economy.
Enhanced Combustion Efficiency
- ACCEL C-Cut copper core creates a hotter, larger spark
- Spark positioned to avoid ground strap interference
- Promotes a more complete air-fuel mixture burn
- Contributes to improved throttle response and fuel efficiency
- Helps reduce emissions through better combustion
Precision Engineering for V-Twins
This spark plug is a smart upgrade for riders looking to extract more performance and efficiency from their Harley Twin Cam or Sportster. The C-Cut design reduces the quenching effect, which can lead to misfires and rough idle, ensuring a smoother running engine. Always confirm the correct heat range for your specific model before installation to ensure optimal performance.
Specifications
- Brand: Accel
- Manufacturer Part #: 2418
- UPC: 743047801673
- Type: Copper core spark plug
- Length: 2.15 in
- Weight: 0.21 lbs
- Country of Origin: Japan
Common questions
What is the main advantage of the ACCEL C-Cut spark plug design?
The ACCEL C-Cut design positions the spark above the electrode midpoint, preventing the ground strap from shrouding the flame. This creates a larger, hotter spark nucleus for more complete combustion, improving performance and efficiency.
Will these spark plugs fit my Harley Twin Cam or Sportster?
Yes, these Accel High Performance C-Cut Copper Core Spark Plugs are designed for V-twin motorcycles, including Harley-Davidson Twin Cam and Sportster models. Please verify the correct heat range for your specific engine and year before purchasing.
Do these spark plugs require a special gap setting?
The C-Cut design achieves a larger spark nucleus without requiring an increased gap. Always refer to your motorcycle's service manual for the recommended spark plug gap for your specific model.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Accel |
| TYPE | Spark Plugs |
| SKU | 274-0163 |
| WEIGHT | 0.21 lb |
