Defective Motorcycle Parts and Product Liability Claims in California
When defective motorcycle parts cause a crash, California product liability law may allow an injured rider to seek compensation from the company that made or sold the part. In many cases, the rider does not have to prove the company was careless. The claim focuses on whether the product was defective and whether that defect caused the injury.
How California Product Liability Law Applies to Motorcycle Parts
California follows a strict liability approach to defective products, first adopted in Greenman v. Yuba Power Products (1963) 59 Cal.2d 57. Under this approach, liability attaches when a seller places a defective product on the market. It does not depend on proving the seller’s failure of care.
That principle applies to motorcycles and their components. A brake, tire, or throttle assembly that fails because of a defect can support a claim, even when the rider was operating the motorcycle properly.
Not every mechanical failure is a product defect. Wear, poor maintenance, and aftermarket changes can also cause a part to fail. That is why defective motorcycle parts claims require a close look at the part, its history, and how the crash happened.
Which Defective Motorcycle Parts Commonly Cause Crashes
Riders have little margin for error when a component fails at speed. Defective motorcycle parts that may be involved in product liability claims include:
- Brakes: loss of braking power, brake line failure, or faulty anti-lock systems
- Tires and wheels: tread separation, blowouts, or wheel failure
- Throttle and controls: a throttle that sticks or does not return to idle
- Steering, frame, and suspension: cracks, welds that fail, or fork and shock problems
- Fuel and electrical systems: leaks, fires, or sudden loss of power
- Helmets and protective gear: equipment that fails to protect as designed
Failures like these can turn an ordinary ride into a serious crash. The resulting injuries may include fractures, spinal cord injuries, burns, and traumatic brain injuries.
The Three Types of Product Defects
California recognizes three categories of product defects. Each one has a different legal test.
Manufacturing Defects
A manufacturing defect exists when a specific unit differs from the manufacturer’s own design or from other units in the same product line. The design may be sound, but something went wrong during production. California jury instruction CACI 1201 covers this theory.
Design Defects
A design defect means every unit is built the same way, and the design itself is unsafe. The California Supreme Court described two tests for this theory in Barker v. Lull Engineering Co. (20 Cal.3d 413). The first looks at whether the product failed to perform as safely as an ordinary consumer would expect. The second weighs the design’s benefits against its risks, including whether a safer alternative design was feasible. These tests appear in CACI 1203 and CACI 1204.
Failure to Warn
A failure-to-warn claim arises when a product carried a risk that was known or knowable at the time, and the warning was missing or inadequate. CACI 1205 addresses this theory. For a motorcycle, this could involve a known hazard with a component that the manufacturer did not disclose.
Who Can Be Held Responsible for Defective Motorcycle Parts
Responsibility may extend beyond a single company. Depending on the facts, parties in the chain of distribution may include:
- The motorcycle manufacturer
- The company that made the failed component
- Distributors and wholesalers
- The dealer or retailer that sold the product
A full investigation also considers other causes. A negligent repair, a careless driver, or a road hazard may have contributed to the crash. Identifying every responsible party helps ensure that no source of compensation is overlooked.
Do Motorcycle Recalls Matter?
Recalls can be a useful starting point. The National Highway Traffic Safety Administration (NHTSA) requires manufacturers to recall vehicles and equipment that have safety-related defects. NHTSA’s VIN lookup tool includes recalls from motorcycle manufacturers for the past 15 calendar years.
The tool has limits. It does not show completed recall information, and it does not cover very recently announced recalls for which all VINs have not yet been identified. Whether a recall exists is one factor in a claim, and an attorney can explain how it may apply to your situation.
Evidence to Preserve After a Defect-Related Crash
The failed part is often the most important evidence in a defective motorcycle parts claim. These steps can help protect it:
- Keep the part and the motorcycle. Do not repair, sell, or scrap them.
- Avoid testing or disassembly. Handling the part can change its condition.
- Photograph everything. Capture the motorcycle, the part, the scene, and your injuries.
- Save records. Keep purchase documents, service records, recall notices, and repair invoices.
- Get medical care promptly. Medical records connect the crash to your injuries.
- Speak with an attorney before talking to insurers or manufacturers.
Product cases often depend on engineering analysis. A qualified engineer can inspect a failed component and explain what went wrong, much like the testimony described in our article on motorcycle accident litigation in Los Angeles.
How Comparative Negligence and Time Limits Affect Your Claim
California follows pure comparative negligence under Li v. Yellow Cab Co. (1975) 13 Cal.3d 804. An injured person may recover even when partly at fault, with the recovery reduced by that person’s percentage of responsibility.
Manufacturers often raise this rule in cases involving defective motorcycle parts. They may argue that poor maintenance, modifications, or riding conduct caused the failure. Documentation and engineering evidence help address those arguments.
Time limits also apply. California Code of Civil Procedure section 335.1 generally allows two years from the date of injury to file a personal injury lawsuit. Waiting can make evidence harder to preserve, so acting early helps.
Speak With a Los Angeles Motorcycle Accident Lawyer
Personal Injury Legal Group represents injured riders across Los Angeles and Southern California. Our attorneys review how the crash happened, what evidence exists, and whether defective motorcycle parts may have played a role. Learn more about our Los Angeles motorcycle accident lawyer services. To discuss your situation, call 310-445-5900 or contact our team.
