Lucas octane booster is the only one that works in my opinion, got it from J+P for way less than my local parts store
Lucas Octane Booster 2 OZ Fuel Additive - Harley 4-Stroke V-Twin
About Lucas
Lucas Oil produces engine oils, additives and problem-solving lubricants used across powersports and racing, including V-twin specific oils and assembly products.
Lucas Octane Booster is a potent fuel additive designed to raise the octane levels of gasoline for your V-twin motorcycle. This compact 2 oz bottle helps unlock more power and ensures a cleaner, more efficient burn.
Why riders pick this
- Raises gasoline octane levels for improved performance
- Safe for turbos, oxygen sensors, and catalytic converters
- Works in carbureted and fuel-injected V-twins
- Promotes cleaner fuel burn and reduced emissions
When you're pushing your V-twin, ensuring optimal fuel combustion is key to performance and engine health. This octane booster helps prevent pre-ignition and knocking, especially in higher-compression engines or those running on lower-octane pump gas. It's engineered to be safe for modern exhaust systems, including those with oxygen sensors and catalytic converters, making it a versatile choice for a wide range of Harley-Davidson and Indian Motorcycle models.
Maximize Combustion Efficiency
- Effectively raises the octane rating of gasoline
- Safe for use with turbos, oxygen sensors, and catalytic converters
- Compatible with both carbureted and fuel-injected engines
- Promotes a cleaner fuel burn and helps reduce exhaust emissions
Compact and Powerful Performance Boost
The 2 oz size is convenient for on-the-go use or for treating smaller fuel tanks. Each bottle can treat up to 25 gallons of fuel, providing a significant octane bump from a small package. Whether you're hitting the track or just want peak performance from your street machine, Lucas Octane Booster helps ensure your 4-stroke V-twin runs strong and clean.
Specifications
- Brand: Lucas
- Manufacturer Part #: 10725
- UPC: 049807107253
- Bottle Size: 2 oz
- Treats: Up to 25 gallons of fuel
- Weight: 0.2 lbs
- Dimensions: 1.35 in L x 1.3 in W x 3.8 in H
Common questions
How much fuel does one bottle treat?
One 2 oz bottle of Lucas Octane Booster is formulated to effectively treat up to 25 gallons of gasoline, providing a noticeable increase in octane.
Is this safe for my oxygen sensors or catalytic converter?
Yes, Lucas Octane Booster is specifically formulated to be safe for use with turbos, oxygen sensors, and catalytic converters on your V-twin motorcycle.
Can I use this in a carbureted engine?
Absolutely. This booster works effectively in both carbureted and fuel-injected V-twin engines, making it suitable for a wide range of Harley and Indian models.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Lucas |
| TYPE | Chemicals |
| SKU | 58-5290 |
| WEIGHT | 0.2 lb |
Haven't tried it yet
Lucas keeps the octane up and fuel system clean.
I have used it on my last three bikes and have never had a problem with engine knock.