No 41 MAIN BALL BEARING 6204 TN9/C4 https://www.agskartparts.com.au/products/653/MAIN-BALL-BEARING-6204-TN9C4
6204 TN9 C4 HIGH PERFORMANCE SKF BRAND BEARING WITH POLIMIDE CAGE [ SUITS MANY ENGINES FROM KT100J TO HIGH PERFORMANCE REED/ROTARY ENGINES] 20MM X 47MM X 14MM