For new riders, choosing the right motorcycle can be confusing, especially with restrictions on engine size and power output. In Australia, the Learner Approved Motorcycle Scheme (LAMS) helps ensure that beginner riders develop their skills safely by limiting them to specific motorcycles. But what exactly is the maximum engine size for LAMS motorcycles, and how does power-to-weight ratio play a role?
This guide explains the key LAMS restrictions, how they impact engine size, and what you need to know before purchasing a learner-approved bike.
Understanding LAMS Restrictions
The LAMS system is designed to help new riders gain experience on motorcycles that are powerful enough for real-world riding but not excessively fast or difficult to control. It applies to learners (L plates) and provisional riders (P1 & P2) across Australia.
The restrictions focus on:
- Engine capacity (measured in cubic centimetres – cc)
- Power-to-weight ratio (measured in kilowatts per tonne)
These factors work together to determine which motorcycles are eligible for learner riders.
What is the Maximum Engine Size for LAMS Motorcycles?
The general rule for LAMS motorcycles is:
- Maximum engine size: 660cc
- Maximum power-to-weight ratio: 150 kW per tonne
This means that even if a motorcycle has an engine below 660cc, it won’t necessarily be LAMS-approved if it exceeds the power-to-weight ratio limit. Some larger motorcycles may also be included in the LAMS list if they have factory restrictions that reduce their power output.
Are There Exceptions to the 660cc Rule?
Yes. Some motorcycles under 660cc may not be LAMS-approved because they exceed the power-to-weight ratio limit. Similarly, some motorcycles with engines slightly larger than 660cc may be restricted and classified as LAMS-eligible.
To check if a specific motorcycle is LAMS-approved, always refer to the official government list or the manufacturer’s information.
Power-to-Weight Ratio Explained
While engine size is a key factor, power-to-weight ratio is equally important. It determines how much power a motorcycle produces in relation to its weight, affecting acceleration and handling.
Example Comparisons:
- A 600cc supersport bike (e.g., Yamaha R6) is not LAMS-approved because of its high power output.
- A 650cc cruiser (e.g., Kawasaki Vulcan S LAMS) is approved because its power is within LAMS limits.
This distinction ensures that beginners ride motorcycles that are powerful enough to handle real-world traffic but not overwhelming for their skill level.
State and Territory Variations in Australia
LAMS is a nationwide scheme, meaning the general rules are consistent across all Australian states and territories. However, each state’s transport department may have its own official LAMS-approved list.
To ensure compliance, check your state’s official LAMS list before purchasing a motorcycle.
Popular LAMS-Approved Motorcycles
There are many great motorcycles under 660cc that qualify as LAMS-approved, including:
- Kawasaki Ninja 650L – A sporty learner bike with restricted power output.
- Honda CBR500R – A popular, well-balanced entry-level sports bike.
- Yamaha R3 – A lightweight, easy-to-handle motorcycle for new riders.
- Royal Enfield Interceptor 650 – A classic twin-cylinder bike within LAMS limits.
- Suzuki V-Strom 650XT LAMS – An adventure-touring motorcycle with a LAMS-restricted engine.
For a full range of learner approved motorcycles, you can explore different options before making a decision.
What Happens If You Ride a Non-LAMS Bike as a Learner?
Riding a non-LAMS motorcycle while on your L or P plates is illegal and can result in:
- Heavy fines
- Loss of licence
- Increased insurance costs
- Safety risks due to handling an overpowered bike
It’s crucial to choose a LAMS-compliant bike to avoid penalties and ensure a safer learning experience.
Key Takeaways
The maximum engine size for LAMS motorcycles is 660cc, but power-to-weight ratio also plays a critical role. Some larger motorcycles may be eligible with restrictions, while some smaller bikes may not qualify if they exceed power limits.
Before purchasing a motorcycle, always check your state’s official LAMS list to ensure it meets the legal requirements. Choosing the right learner-approved bike will help you develop your riding skills safely while staying within the law.