NOTE
- Specifications in this publication may not match those of official certification in some markets due to timing of publication printing, variance in testing methods, and/or motorcycle differences. Customers seeking officially recognized regulatory specifications for their motorcycle should refer to certification documents and/or contact their respective dealer or distributor.
- Harley-Davidson reserves the right to change specifications, equipment or designs at any time without notice and without incurring obligation.
Tires
Table 1. Specified Tires
MODEL | MOUNT | SIZE | SPECIFIED TIRE | PRESSURE COLD | |
|---|---|---|---|---|---|
psi | kPa | ||||
RH1250S Sportster® S | Front | 17 in | Dunlop® Harley-Davidson Series GT503 160/70R17 73V | 36 psi | 248 kPa |
RH1250S Sportster® S | Rear | 16 in | Dunlop® Harley-Davidson Series GT503 180/70R16 77V | 42 psi | 290 kPa |
RH975 NightsterTM | Front | 19 in | Dunlop® D401F 100/90B19 57H BW | 31 psi | 214 kPa |
RH975 NightsterTM | Rear | 16 in | Dunlop® D401T 150/80B16 77H BW | 40 psi | 276 kPa |
WARNINGHarley-Davidson recommends the use of its specified tires. Harley-Davidson vehicles are not designed for operation with non-specified tires, including snow, moped and other special-use tires. Use of non-specified tires can adversely affect stability, handling or braking and lead to loss of vehicle control, which could result in death or serious injury. (00024d)
Weights and Dimensions
Table 2. Weights
ITEM | Sportster® S (RH1250S) | NightsterTM (RH975) | ||
|---|---|---|---|---|
lb | kg | lb | kg | |
Running weight(1) | 502 | 228 | 481 | 218 |
Maximum added weight allowed(2) | 420 | 190 | 441 | 200 |
GVWR | 922 | 418 | 922 | 418 |
GAWR front | 359 | 163 | 352 | 160 |
GAWR rear | 595 | 270 | 595 | 270 |
(1) The total weight of the motorcycle as delivered with all oil/fluids and approximately 90% of fuel.
(2) The total weight of accessories, cargo, riding gear, passenger and rider must not exceed this weight.
Table 3. Dimensions
ITEM | Sportster® S (RH1250S) | NightsterTM (RH975) | ||
|---|---|---|---|---|
in | mm | in | mm | |
Length | 89.4 | 2271 | 86.9 | 2206 |
Overall Width | 33.1 | 841 | 32.9 | 836 |
Overall height | 42.7 | 1085 | 43.6 | 1108 |
Wheel base | 59.8 | 1518 | 61.3 | 1556 |
Road clearance | 3.5 | 89 | 4.2 | 106 |
Seat height(1) | 28.9 | 734 | 27.1 | 688 |
(1) With 81.7 kg (180 lb) rider on seat
Capacities
Table 4. Capacities
ITEM | Sportster® S (RH1250S) | NightsterTM (RH975) | ||
|---|---|---|---|---|
U.S. | METRIC | U.S. | METRIC | |
Fuel tank (total) | 3.1 gal | 11.8 L | 3.1 gal | 11.9 L |
Low fuel warning light on (approximate) | 0.8 gal | 3 L | 0.8 gal | 3 L |
Engine oil capacity | 4.75 qt | 4.5 L | 4.75 qt | 4.5 L |
Service oil change capacity | 4.0 qt | 3.8 L | 4.0 qt | 3.8 L |
Coolant (approximate) | 2.32 qt | 2.2 L | 2.2 qt | 2.0 L |
Engine and Transmission
Table 5. Engine
ITEM | Sportster® S (RH1250S) | NightsterTM (RH975) | ||
|---|---|---|---|---|
SPECIFICATION | SPECIFICATION | |||
Number of cylinders | 2 | 2 | ||
Type | 4-cycle, 60 degree V-Type, Liquid cooled Dual over head camshafts (DOHC) | 4-cycle, 60 degree V-Type, Liquid cooled Dual over head camshafts (DOHC) | ||
Compression ratio | 12.0:1 | 12.0:1 | ||
Bore | 4.13 in | 105 mm | 2.59 in | 66 mm |
Stroke | 2.85 in | 72.3 mm | 3.82 in | 97 mm |
Displacement | 76.4 in³ | 1252 cm³ | 59.5 in³ | 975 cm³ |
Maximum Revolutions Per Minute (rpm) | 9500 rpm(1) | |||
Fuel requirement | Premium unleaded | Premium unleaded | ||
Lubrication system | Pressurized, semi-dry sump | Pressurized, semi-dry sump | ||
Table 6. Transmission
TRANSMISSION | SPECIFICATION |
|---|---|
Type | Constant mesh, foot shift |
Speeds | 6 forward |
Table 7. Spark Plug Specifications
SPARK PLUG | SPECIFICATIONS |
|---|---|
Gap | 0.7–0.8 mm (0.028–0.031 in) |