Akerly & Childs 4.310" Bore Piston Ring Compressor Tapered Billet Aluminum Black Anodize - Each Spark Plug Indexer Four-hole design enhances carb signal

Four-hole design enhances carb signal to improve throttle response and increase torque

Made from a lightweight yet durable material

usually resulting in the highest horsepower and torque gains out of all aFe’s filter media options

while increasing thermal conductivity

and go-karts

Akerly & Childs 4.310" Bore Piston Ring Compressor Tapered Billet Aluminum Black Anodize - Each Spark Plug Indexer Four-hole design enhances carb signalProduct Description: Piston Ring Compressor 4. 310 in Bore Tapered Billet Aluminum Black Anodized Sold Individually Akerly & Childs over 50 years experience in racing provide products for xtreme racing conditions.