When Shimano launched the GRX in 2019, the question was legitimate: was a dedicated gravel groupset really necessary? Six years on, the answer is clear — yes, and GRX has redefined expectations for off-road bikes.

Why GRX Is Different from Road Groupsets

• Chainring tooth profile: Optimised for mud-loaded chains.
• Ergonomic levers: Designed to brake from the drops.
• Rear derailleur with clutch mechanism: More tolerant of trail debris.
• Smaller chainrings: Gearing suited for steep climbs with load.

GRX 400 vs 600 vs 820

GRX 400: Excellent value, mechanical, 1x or 2x. Suitable for most riders.
GRX 600: Higher-quality components, more ergonomic levers, more precise shifting.
GRX 820: Maximum lightness, 12-speed, for competition or those wanting the best.

1x or 2x?

1x: simpler, less maintenance, less weight. 2x: wider gear range for versatile terrain. The Rinos Sandman is available in both — the choice depends on your terrain and riding style.