| Component | Shimano GRX RX820 1x12-speed Close | Shimano GRX RX820 1x12-speed Wide | Shimano GRX RX825 Di2 1x12-speed Wide Wireless |
| Frame | 100% toray T700/T800 UD carbon fibre mix for balanced strength and weight saving using EPS molding process | 100% toray T700/T800 UD carbon fibre mix for balanced strength and weight saving using EPS molding process | 100% toray T700/T800 UD carbon fibre mix for balanced strength and weight saving using EPS molding process |
| Custom Paint Colour | Yes, factory painted | Yes, factory painted | Yes, factory painted |
| Custom Graphics Colour | Yes, factory painted | Yes, factory painted | Yes, factory painted |
| Forks | Carbon | Carbon | Carbon |
| Headset | Ahead 1.5” | Ahead 1.5” | Ahead 1.5” |
| Headset Spacers | UD Carbon | UD Carbon | UD Carbon |
| Steerer bung | Compressor | Compressor | Compressor |
| Bottom Bracket | Praxis Works BSA 68 Threaded | Praxis Works BSA 68 Threaded | Praxis Works BSA 68 Threaded |
| Lever & Calliper Assembly Left | ST-RX820/LA GRX | ST-RX820/LA GRX | ST-RX825 GRX |
| Lever & Calliper Assembly Right | ST-RX820 GRX 12-speed STI | ST-RX820 GRX 12-speed STI | ST-RX825 GRX Di2 12-speed STI |
| Sprint Shift | NA | NA | NA |
| Front Derailleur | NA | NA | NA |
| Rear Derailleur | RD-RX820 GRX 12-speed | RD-RX822 GRX 12-speed | RD-RX827 GRX Di2 12-speed |
| Chainset | FC-RX820 GRX | FC-RX820 GRX | FC-RX820 GRX |
| Chainring Options | 40 or 42T | 40 or 42T | 40 or 42T |
| Crank Length Options | 170/172.5/175mm | 170/172.5/175mm | 170/172.5/175mm |
| Cassette | CS-R8101 Ultegra 12-speed | CS-M8100 XT 12-speed | CS-M8100 XT 12-speed |
| Ratios | 11-34 or 11-36T | 10-45 or 10-51T | 10-51T |
| Chain | CN-M8100 XT/Ultegra with quick link, 12-speed | CN-M8100 XT/Ultegra with quick link, 12-speed | CN-M8100 XT/Ultegra with quick link, 12-speed |
| Di2 Battery | NA | NA | BT-DN320 Di2 wireless rear derailleur |
| Cables | Shimano | Shimano | Shimano |
| Brake Callipers | BR-RX820 flat mount | BR-RX820 flat mount | BR-RX820 flat mount |
| Rotors | XTR/Dura Ace RT-CL900 | XTR/Dura Ace RT-CL900 | XTR/Dura Ace RT-CL900 |
| Rotor Sizes | 160mm | 160mm | 160mm |
| Handlebars | Pro PLT Compact | Pro PLT Compact | Pro PLT Compact |
| Handlebar Options | 36/38/40/42/44/46cm | 36/38/40/42/44/46cm | 36/38/40/42/44/46cm |
| Stem | Pro PLT | Pro PLT | Pro PLT |
| Stem Options | 50/60/70/80/90/100/110/120/130mm | 50/60/70/80/90/100/110/120/130mm | 50/60/70/80/90/100/110/120/130mm |
| Seatpost | Carbon 180g 27.2mm | Carbon 180g 27.2mm | Carbon 180g 27.2mm |
| Seatpost Options | 0/20mm | 0/20mm | 0/20mm |
| Saddle | Pro Stealth Sport | Pro Stealth Sport | Pro Stealth Sport |
| Saddle Sizes | 142/152mm | 142/152mm | 142/152mm |
| Wheels | Hunt 4 Season Pro Disc Alloy | Hunt 4 Season Pro Disc Alloy | Hunt 4 Season Pro Disc Alloy |
| Wheel Options | Yes | Yes | Yes |
| Sealant | Orange Seal 100ml x2 | Orange Seal 100ml x2 | Orange Seal 100ml x2 |
| Tyre | Vittoria Terreno | Vittoria Terreno | Vittoria Terreno |
| Tyre Options | Yes | Yes | Yes |
| Axle Front | 12 x 120 x 1.5 | 12 x 120 x 1.5 | 12 x 120 x 1.5 |
| Axle Rear | 12 x 171 x 1.5 | 12 x 171 x 1.5 | 12 x 171 x 1.5 |
| Bartape | BBB BHT-16 - Gravel Ribbon 3.5mm or BBB BHT-14 2.0mm | BBB BHT-16 - Gravel Ribbon 3.5mm or BBB BHT-14 2.0mm | BBB BHT-16 - Gravel Ribbon 3.5mm or BBB BHT-14 2.0mm |
| Hardware | SS Allen Bolts, Washers and Spring Washers | SS Allen Bolts, Washers and Spring Washers | SS Allen Bolts, Washers and Spring Washers |
| Anti Rattle | Capgo 1m | Capgo 1m | Capgo 1m |
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