A used motorcycle is the most efficient way to get onto your first bike — or your next bike. It is also one of the most reliable ways to acquire an expensive problem if the inspection is rushed or incomplete. Sellers are not obligated to disclose crash history, poor maintenance, or impending component failure. The buyer's only protection is knowledge.

This checklist is the inspection process used by experienced buyers and mechanics. Work through it in sequence. If the seller won't allow it, that is itself information.

Before You Arrive: Pre-Inspection Homework

VIN Check

Every motorcycle has a Vehicle Identification Number (VIN) stamped on the frame — typically on the steering head — and on the engine cases. Before committing to any inspection, run this number through a national database check (in the UK: HPI Check; in the US: NMVTIS or Carfax Motorcycle).

What you're checking for:

  • Outstanding finance (you could buy a bike the seller doesn't legally own)
  • Stolen marker
  • Recorded write-off status (Category A/B: structural damage that makes the bike unsafe to ride; Category C/D/S/N: repairable write-offs that may have been repaired)
  • Mileage discrepancy (if the database shows a higher mileage from a previous MOT/inspection than the current odometer, the clock has been wound back)

A VIN check costs approximately $20–$30 and is worth every penny.

Service History

Ask for a service history before agreeing to an inspection. A complete history (dealer stamps, receipts, or documented work) indicates a maintained bike. An absent history doesn't necessarily mean the bike is poorly maintained — some owners are diligent maintainers who don't document — but it increases due diligence requirements.

Ask specifically: when was the last valve clearance check? Last coolant change? Last brake fluid change? For chain-driven bikes: last chain and sprocket replacement? The answers reveal how attentive the maintenance has been.

Request a Cold Start

This is non-negotiable. A warm engine can mask problems that only appear when starting from cold — excessive cranking to fire, oil pressure warning light hesitation, or smoke on startup. Ask the seller not to run the bike before your arrival.

Visual Inspection Framework

Frame and Crash Indicators

Examine the frame at the steering head, swing arm pivot, and footpeg mounts — the three zones that absorb crash energy. Cracks, weld repairs, or fresh paint over old metal indicate previous structural damage. Fresh paint anywhere on an otherwise worn bike deserves explanation.

Check the engine casings (covers on both sides of the engine). Scrapes, cracks, or ground-down edges indicate the bike has been laid down. A bike that's been dropped in a car park is not necessarily a problem — a bike that's been in a 100 km/h crash is.

Examine the footpegs, lever ends, and bar ends for wear. These are the first contact points in a low-side. Fresh replacements can indicate a previous crash; excessive wear on originals indicates a bike that's been dropped.

Check both fork tubes (the shiny metal tubes behind the front wheel) for straight alignment. Stand in front of the bike and look down the forks. They should be perfectly parallel. Any visible lateral misalignment indicates a frontal impact — potentially straightened, but structural compromise may remain.

Fork Seals

Slide your finger around the lower edge of the fork tube where it meets the fork leg. Any oiliness here indicates a leaking fork seal. Leaking seals are a service item ($100–$250 at a shop), but they also indicate the bike has been running in this condition — which means uneven damping and contaminated brake components if left long enough.

Steering Head Bearings

Hold the front brake hard and push forward on the bars firmly. Any looseness or clunking from the steering head indicates worn or damaged bearings. Next, lift the front wheel off the ground (ask someone to sit on the rear) and slowly rotate the bars from lock to lock. Movement should be smooth throughout. Notchiness or resistance at centre indicates a pitted bearing — a crash consequence or simply a service-neglected item.

Tank Rust

Remove the fuel cap and look inside with a flashlight. Orange or brown contamination on the tank walls indicates rust. Rust flakes travel through the fuel system to the carburettor or injectors. A mildly rusty tank can be treated; a heavily rusted one needs professional cleaning or replacement. Price the remediation before committing to the purchase.

Drivetrain and Consumables

Chain and Sprockets

Chain wear: Lift the chain at the rear sprocket and attempt to pull it away from the sprocket teeth. On a worn chain, you can pull it far enough to expose the tooth tips; on a good chain, it won't move more than 1–2mm. Also push and pull the chain laterally — excessive sideways play indicates wear beyond the adjustment range.

Sprocket wear: Front and rear sprocket teeth should have a slight hook shape on the drive side but should not be sharply pointed, undercut, or showing shark-fin wear. A worn sprocket needs replacement with the chain — fitting a new chain on old sprockets accelerates wear on both.

The cost: Front sprocket ($15–$30), rear sprocket ($40–$80), chain ($40–$120). Total: $100–$230. Budget this if any doubt exists.

Brake Rotors

Front and rear brake discs have a minimum thickness stamped on them. Measure with a calliper or look for visible scoring — parallel grooves running around the disc surface indicate pad debris embedding. Light surface rust (present on any unused disc) is normal and clears within a few brake applications. Deep grooves or a disc below minimum thickness requires replacement ($60–$200 per disc plus labour).

Tyres: Date Codes and Wear

Every tyre has a four-digit date code (DOT code) on the sidewall — the last four digits indicate manufacture week and year. 4318 means week 43 of 2018. Tyres older than five years should be replaced regardless of visible tread depth — rubber hardens and loses grip properties independently of wear.

Check tread depth across the width of both tyres. Central wear on the rear is normal. Edge wear indicates aggressive cornering use (not necessarily a problem; just context). Flat-spotting or cupping indicates suspension issues or emergency braking patterns.

The Test Ride Diagnostic

Before riding, clarify your insurance position. In most jurisdictions, you need coverage to legally ride a motorcycle — the seller's insurance may not cover you. A reputable seller will provide a short test ride as part of the sales process; anything less suggests something to hide.

What to Evaluate While Riding

Cold start behaviour: The bike should start promptly and idle without excessive smoke after a brief warm-up. White smoke on startup that clears is normal (condensation). Blue or black smoke that persists indicates oil burning or fuel mixture problems.

Clutch engagement: Gradually release the clutch from a standstill. Slipping sensation (RPM rises but the bike doesn't accelerate) indicates a worn clutch. Sharp, abrupt engagement can indicate incorrect cable adjustment or a contaminated clutch plate.

Transmission through the gears: All gears should engage cleanly and hold without jumping out under load. A false neutral between two gears is a wear indicator. Difficulty engaging first from neutral (normal on many bikes when warm) vs. gear-jumping under power (not normal) — know the difference.

Straight-line tracking: On a straight, smooth road, release the bars briefly. The bike should track straight with no input. Any drift left or right indicates frame misalignment, steering head issues, or uneven tyre pressure. This is one of the most reliable crash-damage indicators available.

Brakes at speed: Both brakes should feel firm and progressive. A spongy lever indicates air in the hydraulic system or worn fluid (absorbs moisture over time). Vibration through the lever under braking indicates a warped rotor.

The Negotiation

Every item identified above is negotiating leverage. A worn chain and sprocket set is $150–$230 plus your time. Fork seals are $150–$250 at a workshop. A set of tyres is $150–$300 fitted.

Itemise what needs doing. Subtract from asking price. This is not aggressive negotiation — it is accurate pricing of the machine's actual condition. A seller who refuses reasonable adjustment for documented needs is telling you the price matters more than the relationship. That information has value too.