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Honda Rebel CMX500 (2017-2021) — Maintenance Specs

The Rebel (CMX500 outside North America) launched for 2017 as a bobber-style cruiser powered by the familiar 471 cc parallel-twin from the CB500 line, tuned for low-end torque with a low 27.2-inch seat. Its maintenance mirrors the 500 family: 2.7 L of 10W-30 oil with the filter, DOT 4 brake fluid and NGK CPR8EA-9 plugs, but the cruiser chassis brings 16-inch tires at an even 29 psi front and rear, a shorter 112-link 520 chain with 25-35 mm slack, and a compact YTZ8V battery behind the side cover. A single 296 mm front disc and 240 mm rear disc do braking duty. The 2018 US owner's manual on Honda MotoPub documents the whole 2017-2021 run, which saw only color changes after 2018.

Quick specs

Oil capacity (with filter) 2.7 Lafter draining and filter change 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Oil capacity (without filter) 2.5 Lafter draining 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Oil type Pro Honda GN4 4-stroke oil (USA & Canada) or Honda 4-stroke oil 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Oil viscosity SAE 10W-30API SG or higher, JASO MA 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Front tire pressure (solo) 29 psi200 kPa 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Rear tire pressure (solo) 29 psi200 kPa 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)

Maintenance schedule

Specification Value Source
Engine oil & filter every 4,000 mi (6,400 km) or 1 yearMaintenance Schedule 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Brake fluid change every 2 years 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)

Fluids & capacities

Specification Value Source
Oil capacity (with filter) 2.7 Lafter draining and filter change 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Oil capacity (without filter) 2.5 Lafter draining 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Oil type Pro Honda GN4 4-stroke oil (USA & Canada) or Honda 4-stroke oil 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Oil viscosity SAE 10W-30API SG or higher, JASO MA 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Coolant capacity 1.62 Lcooling system 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Brake fluid type (DOT) DOT 4 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Fuel capacity 11.2 L2.96 US gal 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)

Torque specs

Specification Value Source
Oil drain plug 30 Nu00b7mengine oil drain bolt 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)

Electrical

Specification Value Source
Battery YTZ8V, 12V 7 Ah (10 HR) 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Headlight bulb 12V 60/55 W 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Spark plug NGK CPR8EA-9standard 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Spark plug gap 0.8-0.9 mm 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)

Tires & wheels

Specification Value Source
Front tire size 130/90-16M/C 67H 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Rear tire size 150/80-16M/C 71H 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Front tire pressure (solo) 29 psi200 kPa 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Rear tire pressure (solo) 29 psi200 kPa 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)
Chain size DID 520, 112 links 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US)

Official manual

Owner's manual on Honda official site

Opens the manufacturer’s official website in a new tab.

Frequently asked questions

How much oil does a Honda Rebel 500 take?
2.5 L after draining; 2.7 L (2.9 US qt) with an oil filter change, per the official manual.
What is the Rebel 500 tire pressure?
29 psi (200 kPa) front and rear - one of the few bikes with equal pressures.
What battery does a Rebel 500 use?
A YTZ8V sealed 12V 7 Ah battery.
What spark plug does a Rebel 500 use?
NGK CPR8EA-9 gapped at 0.8-0.9 mm.

Sources

Value Source Checked
Oil capacity (with filter): 2.7 L 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Oil capacity (without filter): 2.5 L 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Oil type: Pro Honda GN4 4-stroke oil (USA & Canada) or Honda 4-stroke oil 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Oil viscosity: SAE 10W-30 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Coolant capacity: 1.62 L 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Brake fluid type (DOT): DOT 4 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Fuel capacity: 11.2 L 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Engine oil & filter: every 4,000 mi (6,400 km) or 1 year 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Brake fluid change: every 2 years 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Oil drain plug: 30 Nu00b7m 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Battery: YTZ8V, 12V 7 Ah (10 HR) 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Headlight bulb: 12V 60/55 W 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Spark plug: NGK CPR8EA-9 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Spark plug gap: 0.8-0.9 mm 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Front tire size: 130/90-16M/C 67H 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Rear tire size: 150/80-16M/C 71H 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Front tire pressure (solo): 29 psi 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Rear tire pressure (solo): 29 psi 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Chain size: DID 520, 112 links 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
Chain Slack: 25-35 mm 2018 Honda Rebel CMX500 Owner's Manual (Honda MotoPub, US) (p. Specifications, Service Data) 2026-11-03
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