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

Why GRX Is Different from Road Groupsets

The difference isn't just cosmetic. GRX is born from specific gravel riding demands:

• Chainring tooth profile: Optimised for mud-loaded chains. Gear transitions are smoother even in difficult conditions.
• Ergonomic levers: Designed to brake from the drops (with hands on the lower bars), where less force is exerted compared to road riding.
• Rear derailleur with clutch mechanism: The chain tension system is more tolerant of impurities than road groupsets.
• Smaller chainrings: Gearing suited for steep climbs with bikepacking load.

GRX 400 vs 600 vs 820: The Real Differences

GRX 400 (entry-level): Mechanical, available in 1x and 2x. Excellent value for money. Suitable for the vast majority of gravel cyclists. The only limitation is slightly higher weight compared to upper tiers.

GRX 600 (mid-range): Higher-quality machined aluminium components, more ergonomic levers, more precise shifting. For those who ride frequently and appreciate the difference in everyday use.

GRX 820 (top-tier): Maximum mechanical lightness in the GRX range. 12-speed drivetrain, redesigned lever body. For competition or those who simply want the best available.

1x or 2x: The Right Choice for You

Single chainring (1x) simplifies the bike: less weight, less maintenance, no risk of chain drop. The trade-off is a slightly narrower gear range. For mixed use with demanding climbs, 2x offers more versatility.

The Rinos Sandman is available in both configurations — the choice depends on your terrain and riding style.