Specs compared
GasGas MC 85 2027 vs Yamaha YZ85 2027
Motocross, stock specs side by side. Each value names the page it came from; a blank on either side stays blank.
Printed differently: fork travel, shock travel, premix ratio, coolant capacity, seat height and weight. The same on both: engine, front tire and rear tire. Checked 28 Sep 2026 and 16 Oct 2026.
| Spec | GasGas MC 85 2027 | Yamaha YZ85 2027 |
|---|---|---|
| EngineSame | 85cc 2T | 85cc 2T |
| Stock gearing | 13T / 46TOwner's manual p. 123 | Not yet verified |
| Final drive ratio | 3.54 : 1Calculated from the stock sprockets | Not yet verified |
| Chain pitch | 428Owner's manual p. 123 | Not yet verified |
| Front tireSame | 70/100-17 M/C 40M TTOwner's manual p. 124 | 70/100-17 40MOwner's manual p. 9-1 |
| Rear tireSame | 90/100-14 M/C 49M TTOwner's manual p. 124 | 90/100-14 49MOwner's manual p. 9-1 |
| Fork travelPrinted differently | 278 mm (10.9 in)Owner's manual p. 123 | 274 mm (10.8 in)Manufacturer spec sheet (research) |
| Shock travelPrinted differently | 289 mm (11.4 in)Owner's manual p. 123 | 282 mm (11.1 in)Manufacturer spec sheet (research) |
| Premix ratioPrinted differently | 40:1Owner's manual p. 124 | 30:1Owner's manual p. 4-4 |
| Coolant capacityPrinted differently | 800 ml (27.1 fl oz)Owner's manual p. 120 | 550 ml (18.6 fl oz)Owner's manual p. 9-1 |
| Seat heightPrinted differently | 845 mm (33.3 in)Owner's manual p. 123 | 840 mm (33.1 in)Owner's manual p. 9-1 |
| WeightPrinted differently | 68 kg (150 lb)Owner's manual p. 124 | 73 kg (161 lb)Owner's manual p. 9-1 |
Each value shows where it came from. The bike pages list the document, page and date checked. “Printed differently” only says the two documents print different figures; it is not a judgement of either bike.
Stock sizes at MotoSport. GasGas MC 85: 428 chains · Front tires 70/100-17 · Rear tires 90/100-14. Yamaha YZ85: Front tires 70/100-17 · Rear tires 90/100-14. These are affiliate links: we may earn a commission, at no cost to you, and it never changes the specs. Affiliate disclosure.