RTECH R-BLOCKSGR021 starting blocks are designed specifically for young and shorter motocross riders to provide increased stability and control at the starting gate. These risers are configurable in two height options and constructed from durable shockproof plastic, making them lightweight and easy to transport. Features Developed for young and short motocross riders at the starting gate Configurable height options: 10cm (4 inch) or 15cm (6 inch) Constructed from strong shockproof plastic Lightweight and durable design Non-slip top surface for improved grip Non-slip strong foots for ground stability Stackable design for compact storage Ergonomic handle for easy transport Sold as a pair Specifications Top surface dimensions (H=100mm): 200 x 130mm Top surface dimensions (H=150mm): 175 x 120mm Base dimensions: 275 x 175mm Total weight for 10cm set: 590g Total weight for 15cm set: 892g Maximum load capacity: 250kg Cross-Reference OEM Part Numbers R-BLOCKSGR021 Vehicle Fitments Universal use for motocross applications at the starting gate