Factory Workshop SpecificationsPlatform Gen: 1984–1999

1993 Harley Davidson Evolution 80ci (Dyna / Softail / FXR / Touring) Specifications & Consumables

Official workshop technical reference: fluid capacities, spark plug codes, drive chain specs, and tire inflation pressures.

Technical PassportOEM VERIFIED

Engine

1340cc

Cooling

Air-Cooled

Final Drive

Belt Drive

Engine Oil

2.84 L (3.00 US qt)

Spark Plug

HD 5R6A / Champion RN12YC / NGK BPR5ES

Front Tire

MT90B16 (Touring) / 100/90-19 (Dyna) / MH90-21 (FXST Softail)

Browse Flagship Teardowns →

Gen 1984–1999

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 1984 through 1999.

Select Model Year:(Active: 1993)
16 Production Years (1984–1999)

1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999

Engineering Subsystem Workbenches & Calculators

Dedicated deep-dive diagnostic tools, torque matrices, wiring pinouts, and calculators tailored for 1993 Harley Davidson Evolution 80ci (Dyna / Softail / FXR / Touring).

10 Dedicated Engineering Spoke Pages

Subsystem Guide/torques

Fastener Torques

Engine drain plug, axle spindles, caliper mounts, triple clamp pinch bolts & thread lubrication derating guide.

Open Dedicated Workbench →

Subsystem Guide/fluids

Fluids & Capacities

Oil: 2.84 L (3.00 US qt) • Coolant: N/A • Brake: DOT 5 Silicone-Based (Purple) - strictly NEVER mix DOT 5 with glycol DOT 4

Open Dedicated Workbench →

Subsystem Guide/fuses-relays

Fuses & Relays

Main: 30A Main Thermal Circuit Breaker • Location: N/A

Open Dedicated Workbench →

Subsystem Guide/compression

Compression & Leakdown

Ratio: 8.5:1 • Std: 140-160 PSI • Limit: 120 PSI

Open Dedicated Workbench →

Subsystem Guide/valves

Valve Clearances

Intake: N/A mm • Exhaust: N/A mm

Open Dedicated Workbench →

Subsystem Guide/fuel-delivery

Fuel Delivery & TB Sync

Idle: N/A • Rail Pressure: N/A • Vacuum: N/A

Open Dedicated Workbench →

Subsystem Guide/electrical

Charging & Battery

Battery: YTX20L-BS (Dyna/Softail) / Y60-N24AL-B (Touring) • CCA: 310 • Regulated: 13.8 - 14.4 V DC at 3,000 RPM

Open Dedicated Workbench →

Subsystem Guide/tires

Tires & Gearing

Front: MT90B16 (Touring) / 100/90-19 (Dyna) / MH90-21 (FXST Softail) • Rear: MT90B16 or 130/90B16

Open Dedicated Workbench →

Subsystem Guide/suspension

Suspension & Sag

Front Travel: 120 mm • Rear Travel: 76 mm

Open Dedicated Workbench →

Subsystem Guide/maintenance

Maintenance Schedule

Oil: Every 2,500 - 5,000 mi (4,000 - 8,000 km) mi • Valves: N/A • Plugs: Every 5,000 mi (8,000 km) mi

Open Dedicated Workbench →

Fluids & Service Capacities

Shop Fluids →

Engine Oil (Drain & Filter Change)2.84 L (3.00 US qt)

Engine Oil (Drain Only)2.37 L (2.50 US qt)

Recommended Oil Viscosity20W-50 V-Twin Motorcycle Oil API CI-4/JASO MA2

Coolant System CapacityN/A

Brake Fluid StandardDOT 5 Silicone-Based (Purple) - strictly NEVER mix DOT 5 with glycol DOT 4

Drivetrain, Chain & Gearing

Gearing Calculator →Shop Chains & Sprockets →

Drive Chain PitchBelt Drive

Chain Link Count136 Links

Front Sprocket Teeth32T

Rear Sprocket Teeth70T

Final Drive ConfigurationCarbon Belt Drive

Ignition & Electrical Specifications

Shop Plugs & Batteries →

OEM Spark Plug Part NumberHD 5R6A / Champion RN12YC / NGK BPR5ES

Electrode Spark Plug Gap0.97 - 1.09 mm (0.038 - 0.043 in)

OEM Battery Reference CodeYTX20L-BS (Dyna/Softail) / Y60-N24AL-B (Touring)

Battery Output & Rating12V 18Ah/28Ah (310 - 385 CCA)

Spark Plug Inspection Interval5,000 mi (8,000 km) miles

Wheels, Tires & Inflation Pressures

Matched 2-Tire Sets →

Front Tire DimensionsMT90B16 (Touring) / 100/90-19 (Dyna) / MH90-21 (FXST Softail)

Cold Front Inflation Pressure36 PSI (Cold)

Rear Tire DimensionsMT90B16 or 130/90B16

Cold Rear Inflation Pressure40 PSI (Cold)

OEM Wheel Rim Widths (F / R)3.00" / 3.00"

Verified OEM Wheel Fitment: 100/90-19 (F) + 130/90-16 (R)

Shop In-Stock Matched Pairs→

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 1993 Harley Davidson Evolution 80ci (Dyna / Softail / FXR / Touring) platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.

1-Click Factory Service KitOEM Spec Fluid Capacities Matched

Workshop Maintenance Kit & Factory Fluids

Authentic factory-grade motor oil, oil filter, and high-temp brake fluid matched precisely to 1993 Harley Davidson Evolution 80ci (Dyna / Softail / FXR / Touring) capacities.

Full Kit Subtotal

$53.35

20W-50 Heavy-Duty Synthetic

Silkolene Comp 4 4T Oil 20W-50 (1 Quart)

1-Quart Bottles (x4 Included)

Matches factory 20W-50 spec (Oil spec: 2.84 L (3.00 US qt))

Item Price

$47.80($11.95 ea)

DOT 4 Synthetic Formula

EBC High-Performance DOT 4 Synthetic Brake Fluid

8.8 oz (250 ml) Workshop Bottle

Meets & exceeds factory DOT 5 Silicone-Based (Purple) - strictly NEVER mix DOT 5 with glycol DOT 4 specifications

Item Price

$5.55

Factory OEM Spark Plug Spec

HD 5R6A / Champion RN12YC / NGK BPR5ES

Gap: 0.97 - 1.09 mm (0.038 - 0.043 in)

Inspection milestone: 5,000 mi (8,000 km) miles. Exact factory part specification.

Authentic OEM Reference

Search OEM Plugs →

Complete Workshop Maintenance Package3 Essential Service Items

Includes 20W-50 Heavy-Duty Synthetic engine oil (1-Quart Bottles (x4 Included)), high-flow filter & DOT 4 fluid.

Kit Total

$53.35

Looking for direct-fit parts for this 1993 Evolution 80ci (Dyna / Softail / FXR / Touring)?

Browse authentic verified parts, motor oils, filters, brake pads, and tires that fit this exact bike.

Browse Direct-Fit Parts