RC8B4 Differential Gear Set, 20mm HTC

Part Number: ASC81380 These are the OG 20mm HTC gears for maximum drag, hot weather, European racing. HTC gearing with 20mm Sun Gear for locking diff Schelle red o-rings for diff recommended Typical shimming is pumpkins 22.95 and over use the 4 planet shims. 22.90 and under use none. Fits: RC8B4.1, RC8B4.1e, RC8T4 and T4e. Recommended: High Grip European tracks, no dust, no bumps Oil Tips....front and rear, ebuggy and nitro: 7 front / 4 rear low grip. Other combinations as grip increases: 10/6.