The performance-optimized ZZ.21S engine means unbeatable performance that will satisfy every racer. This perfect tuning engine is 1/8 Off-Road for beginners. It has special timing for even higher performance compared to its predecessor. But the engine still remains very easy to set up. Developed for beginner racerswith David Ongar. World Champion 1/8 Off Road
Specifications:
| Max. Engine Speed | 35,000 rpm |
| Engine Displacement | .21 (3.49ccm) |
| Engine Power | 2.80 PS |
| Class | 1: 8 Buggy & Truggy |
| Number of Channels | 8 + 2 |
| Engine Weight | 363g |
| Diffusers | 7.0, 6.5 and 7.5mm included |
