Suzuki DR 750 S/SU BIG (1988–1990) — Specs

Identity

Manufacturer: Suzuki

Model: DR 750 S/SU BIG

Category: Motorcycle

Type: Motorcycle

Years: 1988 → 1990

Engine

Displacement (cc): 727

Cylinders: 1

Power (hp): 50

Power (kW): 37

Torque (Nm): 50

Dimensions

Overall length: 2180 mm

Overall width: 830 mm

Overall height: 1200 mm

Wheelbase: 1480 mm

Ground clearance: 150 mm

Weight (kg): 205

Seat height (mm): 890

Tank (L): 29

Tires

Front tire: 90/90-21

Rear tire: 130/80-17

Front pressure (bar): 1.75

Rear pressure (bar): 2

Drivetrain

Drive chain: 525 chain, 116 links

Sprockets (front / rear): 15 / 48

Ignition

Spark plug: NGK DPR9EA-9

Plug gap: 0.9 mm

Fluids & Filters

Engine oil: SAE10W-40

Engine oil (with filter, L): 2.7

Engine oil (without filter, L): 2.5

Oil filter: OEM oil filter

Air filter: Hiflofiltro HFA3607

Brake fluid: DOT 4

Fuel consumption

Estimated range: ~604 km on a full tank (29.0 L)

Service

Battery: OEM battery specification

Service interval (km): 6000

Service interval (months): 12

Valve check (km): 12000

Parts and consumables for this motorcycle

Data is gathered with care, but without guarantee. Always confirm critical information with your dealer or workshop.

Service notes

Service interval: every 6,000 km or 12 months, whichever comes first. Valve clearance check every 12,000 km. Valve clearance — intake cold 0.05-0.10 mm, exhaust cold 0.05-0.10 mm. Engine oil: oil grade SAE10W-40, 2.7 L with filter change, 2.5 L without filter change. Spark plug: NGK DPR9EA-9 (gap 0.9 mm). Brake fluid: DOT 4. Chain: 116 links, sprockets 15/48 teeth. Tire pressure: front 1.75 bar, rear 2 bar (cold). Tire size: front 90/90-21, rear 130/80-17. Always confirm critical values with the workshop manual or an authorised dealer.

OEM and quality aftermarket parts that fit this bike. Always confirm with your dealer before ordering.

Engine oil

Spec: SAE10W-40, 2.7 L (with filter), 2.5 L (without filter)

OEM OEM recommended engine oil (SAE 10W-40)
Premium Motul 7100 4T (100% Synthetic, Ester)
Premium Motul 5100 4T Technosynthese (Semi-Synthetic)

Which Motul for this bike?

	Motul 7100 4T ✓	Motul 5100 4T
Product	Motul 7100 4T — 100% fully synthetic	Motul 5100 4T — semi-synthetic
Best for	Sport, Naked, Adventure (600cc+), track	Standard, Cruiser, Scooter, daily use
RPM protection	Excellent — ester base, stable under load	Good — for normal riding conditions

Standard Repsol Moto Racing 4T (Synthetic)
Standard Elf Moto 4 Tech (Semi-Synthetic)

Fully Synthetic vs Semi-Synthetic

	Fully Synthetic	Semi-Synthetic
Base oil	100% chemical synthesis (ester or PAO)	Mineral oil + synthetic additives
Heat resistance	Excellent — stable at extreme heat & RPM	Good — suitable for normal temperatures
Cold start	Better — reaches engine faster when cold	Good — adequate for normal climates
Change interval	Longer (up to 10,000 km)	Shorter (5,000–7,000 km typical)
Price	Higher	Lower

Oil filter

Air filter

Spec: Hiflofiltro HFA3607

Standard Hiflofiltro HFA3607

Spark plug

Spec: NGK DPR9EA-9, gap 0.9 mm

OEM NGK DPR9EA-9
Premium NGK DPR9EIX-9
Standard NGK DPR9EA-9

Front brake pads

Spec: EBC FA147

Premium EBC FA147

Rear brake pads

Spec: EBC FA147

Premium EBC FA147

Drive chain

Spec: 116 links | Sprockets 15/48 teeth / 116 links

Front tire

Spec: 90/90-21, 1.75 bar

OEM OEM 90/90-21

Rear tire

Spec: 130/80-17, 2.0 bar

OEM OEM 130/80-17

Battery

Premium Yuasa YTX12-BS or YTZ10S (typical 500-750cc)

Brake fluid

Spec: DOT 4

Standard TotalEnergies HBF4

Coolant

Service interval

Spec: 6 000 km / 12 months

OEM Engine oil + oil filter change
OEM Air filter inspection
OEM Spark plug check
OEM Brake fluid replacement: every 2 years

Valve check

Spec: 12 000 km

OEM Intake clearance: cold 0.05-0.10 mm
OEM Exhaust clearance: cold 0.05-0.10 mm

Suspension

Spec: 41 mm telescopic fork / 466 ml SAE 10W

OEM Fork: 41 mm telescopic fork
OEM Fork oil grade: 466 ml SAE 10W