Buying guide
Insuring a premium motorcycle: agreed value, custom parts, theft, and the coverage Illinois requires
A Ducati Superleggera, a numbered MV Agusta, a Harley-Davidson finished to your own specification: the motorcycle that says the most about its owner is also the one most easily underinsured. The policy decides what a theft, a fire, or a crash is really worth to you. Here is how the official sources say motorcycle coverage works, where Illinois sets the floor, and what to settle in writing before the bike goes into the garage for winter.
Why this matters now
The riding season is closing across the northern states, and this is when the well-kept machine goes under a cover for the winter. It is also the moment to read the policy that protects it. The National Insurance Crime Bureau (NICB) reported in August 2026 that 44,564 motorcycles were reported stolen in the United States in 2025, and that 41% were eventually recovered [1]. NICB’s 20% drop in thefts and its 63% unrecovered figure cover motorcycles, ATVs, snowmobiles, and watercraft together, not motorcycles alone [1]. Either way, the bike that doesn’t come back is paid for by the policy you chose, at the value you chose.
First, your car policy doesn’t ride along
The National Association of Insurance Commissioners (NAIC) says you’ll likely need a separate policy for a motorcycle [2]. Don’t assume the auto or umbrella coverage on your garage of cars extends to two wheels. Ask each insurer in writing whether the motorcycle is listed, and whether your umbrella policy requires a minimum liability limit on it.
What Illinois requires, and why it isn’t enough
Illinois law requires liability insurance on motor vehicles registered and operated in the state, at least $25,000 for injury or death of one person, $50,000 for more than one person, and $20,000 for damage to someone else’s property [4][5]. Liability policies automatically include uninsured motorist bodily injury coverage at the same minimums [4][5]. If you buy higher uninsured motorist limits, Illinois law requires underinsured motorist coverage too [4].
Both regulators say the minimum is a floor, not a plan. The Secretary of State calls it “only the foundation” and warns it may not be adequate if you cause a serious crash [5]. The NAIC says the minimums are too low to fully cover you in a serious accident, and that higher limits often cost little more [2]. A rider with real assets to protect should price limits that match them.
Illinois does not require collision, comprehensive, medical payments, or uninsured motorist property damage coverage [5]. A lender may require physical damage coverage on a financed bike [4]. Uninsured motorist property damage covers damage from an identified, at-fault, uninsured driver, and insurers must offer it with a deductible of no more than $250 [4]. Keep your insurance card with the bike; police can ask for it [5].
Liability, collision, comprehensive: what each actually pays
| Coverage | What it pays | Worth knowing |
|---|---|---|
| Liability | Injury and property damage you cause to others [3] | Doesn’t cover you or your bike [3]. Ask whether passenger (guest) liability is included [3]. |
| Collision | Damage to your bike in a collision, minus the deductible [3] | Usually paid at the bike’s book value before the loss [3] |
| Comprehensive | Fire, theft, vandalism and other non-collision damage, minus the deductible [3] | This is the coverage that pays when the bike is stolen [3][4] |
| Uninsured/underinsured motorist | Your losses caused by a driver with no or too little insurance [3] | Typically medical treatment and lost wages, sometimes property damage [3] |
The value question: book value, agreed value, or replacement cost
This is where a fine motorcycle is protected or quietly shortchanged. The Insurance Information Institute (Triple-I) says collision and comprehensive usually pay the bike’s book value before the loss [3]. Insurers settle total losses in different ways, and the words matter. One insurer’s published definitions show the choices [6]:
- Actual cash value considers depreciation and wear and tear. It is generally what you can expect after a total loss, minus your deductible [6].
- Agreed value is the figure you and the insurer agree the motorcycle is worth, and the total you may receive after a covered total loss. Setting it takes an appraisal [6].
- Replacement cost, in that insurer’s terms, pays the cost of a new, unused motorcycle of similar year, make, size, and model, and only for a bike bought new and one model year old or newer [6].
For a limited-run, collectible, or heavily optioned machine, ask each insurer which method applies, put the agreed figure in writing, and keep the appraisal behind it. Read our collector car insurance guide for why “stated value” is not the same promise as agreed value.
Custom parts: the coverage most owners underestimate
Triple-I warns that many collision and comprehensive policies cover only factory-standard parts, or limit coverage for add-ons such as chrome, custom paint, trailers, and sidecars [3]. Illinois’s regulator lists custom or non-factory equipment as an optional coverage you buy for extra premium [4]. How one motorcycle insurer handles it shows what to ask [7]:
- It includes $1,000 of optional equipment coverage when you buy comprehensive and collision, and sells more in $1,000 steps up to $30,000 [7].
- Only the difference over the factory part counts. Its example: $1,000 custom handlebars replacing $500 stock bars need $500 of extra coverage, not $1,000 [7].
- Its “optional equipment” includes custom paint, plating, and exhaust, permanently installed electronics and alarms, sidecars and trailers, and parts added by a dealer or a previous owner [7].
- Performance parts are different. It says high-performance exhausts, engine kits, and nitrous systems are often excluded, and that it won’t cover a nitrous kit [7].
- Its replacement-cost cover for optional equipment is not available on its agreed-value policies [6], so ask how your accessories are valued under whichever method you choose.
Keep the receipts, installation invoices, and photographs of every upgrade [7]. When you buy a bike that a previous owner customized, ask the seller for those records too.
Theft: the precautions NICB recommends
NICB’s advice for motorcycles and other recreational vehicles [1]:
- Store the bike in a locked garage or another secure, enclosed place whenever you can.
- Use more than one layer of protection: locks, chains, and immobilizers.
- Keep records of the VIN and other identifying details, with current photos.
- Report a theft to the police and your insurer as soon as possible. More than half of recreational vehicle recoveries happen within two weeks of the report [1].
Illinois’s regulator notes that some insurers give an anti-theft device discount on comprehensive coverage [4]. Ask whether yours does, and what device qualifies.
Winter storage: a “lay-up” without a gap
Triple-I says lay-up policies, offered mostly in northern states, suspend everything except comprehensive while the bike is stored for winter [3]. That keeps theft and fire covered in the garage. Before suspending liability, ask the insurer how the lay-up works with Illinois’s electronic insurance verification. The Secretary of State says a vehicle it can’t verify is checked again after 30 days, to learn whether it was sold or placed into storage. If the second check fails, the owner gets a registration suspension letter and must prove the bike was insured on the date of the first check [5]. Never ride on a day the liability is suspended.
Shopping the policy
- Confirm the company is licensed in Illinois. Unlicensed companies don’t have to follow state insurance law or take part in the Insurance Guaranty Fund [4].
- Check the company’s complaint record with the Illinois Department of Insurance, and the agent’s license through NAIC’s State Based Systems lookup [4].
- Get written quotes for the same coverages, limits, and deductibles from each insurer [2][4].
- Ask about rider-course, multi-bike, multi-policy, club, and mature-rider discounts. Triple-I says some insurers offer them [3].
- Before switching, ask the agent for a non-bound application, so you learn whether you’re accepted and at what price before cancelling the old policy [4].
Your checklist
- Confirm the motorcycle has its own policy, or is listed on one [2].
- Carry liability limits that match your assets, not the state minimum [2][5].
- Choose the settlement method on purpose, and get any agreed value in writing with the appraisal [6].
- Insure custom parts for their real value over stock, and keep every receipt [3][7].
- Lock it, store it inside, record the VIN and photos, and report a theft at once [1].
- If you lay it up for winter, keep comprehensive and confirm how the insurer handles state verification [3][5].
Shopping for the bike itself? Start with our premium motorcycle buying guide.
Sources
- National Insurance Crime Bureau (Aug. 3, 2026): Recreational Vehicle Thefts Declined in 2025, but Most Remain Unrecovered
- NAIC: A Consumer’s Guide to Auto Insurance (2022, PDF)
- Insurance Information Institute (Triple-I): Motorcycle insurance
- Illinois Department of Insurance: Auto Insurance Shopping Guide
- Illinois Secretary of State: Mandatory Vehicle Insurance, VSD 361.18 (May 2024, PDF)
- Harley-Davidson Insurance: Motorcycle Insurance Definitions and Terms Glossary (one insurer’s published terms)
- Harley-Davidson Insurance: Does Insurance Cover a Customized Motorcycle? (one insurer’s published terms)