What is the Cycle Tank Sealer PLUS Kit?
The KBS Cycle Tank Sealer PLUS Kit is a four-step motorcycle fuel tank restoration kit that strips a failed liner out of the tank, then cleans, etches, and permanently seals the bare metal. The PLUS Kit treats tanks up to 5 gallons and adds a quart of KBS Strip to the standard three-step system of KBS Klean, RustBlast, and Gold Standard Tank Sealer.
Up to 5 Gal
Tank Capacity
4 Steps
Strip, Clean, Etch, Seal
Gold Standard Tank Sealer is a single-component, ready-to-use, moisture-cured urethane that forms a silver metallic film across the entire tank interior. The cured film is impervious to all fuels, alcohol additives, and most solvents, seals pinholes and weld seams, and stays flexible enough to survive tank vibration and the expansion and contraction of the metal.
KBS Strip is what separates the PLUS Kit from the standard Cycle Tank Sealer Kit. Any previous sealer or liner has to come out completely before a new coating will bond, and KBS Strip dissolves old tank liners so the 3-Step System can start on clean metal. KBS Strip can be strained and reused as many times as the job needs.
Every KBS kit ships factory direct from Valparaiso, Indiana, with detailed instructions in the box. Satisfaction guaranteed!
KBS Fuel Tank Sealer Kit Eliminates Rust and Seals the Tank
The Cycle Tank Sealer PLUS Kit seals steel, aluminum, and fiberglass tanks holding up to 5 gallons, including motorcycle, generator, lawn mower, tractor, snowmobile, and utility tanks. Gold Standard Tank Sealer also handles diesel tanks, oil tanks, and non-potable water tanks. Plastic and polyethylene tanks need Fusion SEP first, because Tank Sealer alone will not bond to plastic.
- Motorcycle and Powersports
- Motorcycle and scooter fuel tanks, ATV and snowmobile tanks, and vintage bike tanks where a replacement tank is scarce or expensive.
- Small Engine and Equipment
- Generator tanks, lawn mower and garden tractor tanks, and pressure washer tanks that sat with fuel in them over a season.
- Fuel Types
- Gasoline, ethanol-blended pump fuel, race fuel, and diesel. The cured film resists all fuels and alcohol additives.
- Storage and Utility Tanks
- Oil tanks, utility tanks, and non-potable water tanks up to 5 gallons in capacity.
- Substrates
- Steel, aluminum, and fiberglass. Fiberglass follows the same 3-Step System with one change: limit RustBlast contact to 2 minutes instead of 30 to 60.
- Tanks That Need Stripping First
- Any tank previously coated with another sealer or liner. The old coating must be fully removed, which is exactly what the quart of KBS Strip in this kit is for.
Can the PLUS Kit Seal a Tank That Already Has a Failed Liner in It?
Yes, and that is the case the PLUS Kit exists for. Pour the KBS Strip in, rotate the tank, and repeat applications until the old liner is gone, using a tweezers-style tool to pull out loosened chunks. Work between 60 and 85 degrees F; KBS Strip is more effective the warmer it is, and above 70 degrees F is best. Once the tank is fully stripped, start at Step 1 of the 3-Step System.
The Cycle Tank Sealer PLUS Kit contains a quart of KBS Strip, a quart of KBS Klean, a quart of RustBlast, 8 oz of Gold Standard Tank Sealer, nitrile gloves, a stir stick, and detailed printed instructions. The 8 oz of Tank Sealer is sized to coat a tank up to 5 gallons in a single pour-and-drain coat.
- Quart of KBS Strip: Dissolves old tank liners and previous sealers so new coating bonds to clean metal. Can be strained and reused across repeat applications.
- Quart of KBS Klean: Water-based heavy-duty cleaner and degreaser, mixed 1 part hot water to 1 part KBS Klean for tank interiors.
- Quart of RustBlast: Rust remover and metal etch that leaves a zinc phosphate film to help Tank Sealer bond.
- 8 oz Gold Standard Tank Sealer: Single-component, ready-to-use moisture-cured urethane. No mixing, no hardener, no measuring.
- Permanent Silver Metallic Film: Cures into a tough, fuel-impervious seal across the whole tank interior, including pinholes and weld seams.
- Nitrile Gloves and Stir Stick: The consumables the job needs are in the box, along with step-by-step printed instructions.
- 600°F Operating Temperature: A properly coated surface handles the heat found around engines and exhaust without breaking down.
- Stays Flexible: The cured film expands and contracts with the tank, so vibration and temperature swings do not crack it.
- Non-Flammable and MEK Free: Environmentally safe, contains no methyl ethyl ketone.
Gold Standard Tank Sealer cures into a cross-linked film rated to 600°F that resists all fuels and alcohol additives.
Do I Need to Add BackBone Mesh to the Kit?
Add the mesh when the tank has pinholes or thin, weak areas that need reinforcing. BackBone Reinforcing Mesh is embedded into a thin exterior coat of Tank Sealer over the weak spot, and the directions in the box walk through the process. A tank with heavy rust and a failed liner but sound metal does not need it.
One Cycle Tank Sealer PLUS Kit seals a single fuel tank of up to 5 gallons. The 8 oz of Gold Standard Tank Sealer in the kit is matched to that capacity, and Tank Sealer is applied as one pour-and-drain coat rather than multiple coats. Coverage varies with tank condition, internal baffles, and substrate.
| Tank Capacity | KBS Kit to Order |
|---|
| 5 gallons or less, previously coated | Cycle Tank Sealer PLUS Kit (this kit) |
| 5 gallons or less, never coated | Cycle Tank Sealer Kit |
| 5 to 12 gallons, previously coated | Large Cycle Tank Sealer PLUS Kit |
| 12 to 25 gallons | Auto Fuel Tank Sealer Kit |
| 25 to 50 gallons | Tank Sealer Kit for 25 to 50 Gallon Tanks |
Timing that matters: seal the tank within 10 days of finishing prep, and allow a full 96 hours of cure before adding fuel. Always test the tank with water before fuel goes back in.
Pro Tip: Drain every bit of excess sealer, then keep rotating the tank side to side every 5 minutes as it drains so nothing pools. Drained sealer is spent and cannot be saved or poured into a second tank.
Ventilation and safety: always wear protective gloves and safety glasses, and work in a well-ventilated area. Heed every warning and caution notice on the product labels.
The Cycle Tank Sealer PLUS Kit differs from a standard tank sealer kit in one way that decides the purchase: the PLUS Kit includes a quart of KBS Strip to dissolve a previous liner, so it starts a step earlier. A standard kit assumes the tank has never been coated and begins at cleaning, which fails if an old sealer is still in the tank.
| | Cycle Tank Sealer PLUS Kit | Standard Tank Sealer Kit |
|---|
| Removes a previous liner | Yes, includes a quart of KBS Strip | No, the tank must already be bare |
| Steps in the process | 4: strip, clean, etch, seal | 3: clean, etch, seal |
| Kit contents | KBS Strip, KBS Klean, RustBlast, 8 oz Tank Sealer | KBS Klean, RustBlast, 8 oz Tank Sealer |
| Tank capacity | Up to 5 gallons | Up to 5 gallons |
| Price | $60.00 | $50.00 |
| Best for | A tank with a failed, flaking, or peeling liner | A rusty tank that has never been lined |
The Cycle Tank Sealer PLUS Kit is built for the harder version of the job, where a previous liner has to come out before anything new can bond to the metal. That stripping step is what the extra $10 covers, and a tank that has never been coated does not need it: the same 3-Step System and the same 8 oz of Gold Standard Tank Sealer ship in the standard Cycle Tank Sealer Kit.
After the tank is drained, Gold Standard Tank Sealer needs 96 hours of undisturbed air cure before fuel goes back in. Leave the tank openings open, keep it out of direct sun and away from any heat source, and water test the tank before refueling. Clean tools with KBS #1 Thinner immediately, because cured Tank Sealer cannot be removed.
Once the tank is drained and the excess is off the threads and fuel lines, the job is a waiting game rather than more work.
- Step 1: Air dry, do not force cure
- Leave the tank away from direct sun and any heat source. Heating the tank does not speed the cure and can hinder adhesion.
- Step 2: Wait the full 96 hours
- Leave the tank openings open so air reaches the coating. Ninety-six hours is the figure for maximum cure.
- Step 3: Water test, then refuel
- Test the tank with water before fuel goes back in, so a missed pinhole shows up harmlessly.
- Step 4: Clean up while wet
- Use KBS #1 Thinner on tools and equipment immediately. Cured Tank Sealer cannot be removed.
Tank Sealer Application Directions and TDS
The full three-step process, temperature ranges, cure times, and the fiberglass and stripping variations, in one place.
Read Article →
The KBS 3-Step Tank Sealing System
Why each of KBS Klean, RustBlast, and Gold Standard Tank Sealer exists, and what skipping one costs you.
Read Article →
How to Avoid Common Tank Sealer Mistakes
The fix-it guide: bubbling, pooling, foaming during drain, and what to do when a seal goes wrong.
Read Article →
How Much Tank Sealer Do I Need?
Match your tank capacity to the right kit or bulk quantity, from a 5 gallon cycle tank to a 200 gallon utility tank.
Read Article →
Tank Sealer Chemical Resistance
What the cured film stands up to, fuel by fuel and solvent by solvent, before you put anything unusual in the tank.
Read Article →
Sealing a Plastic Tank Instead
Plastic and polyethylene tanks need Fusion SEP before Tank Sealer. Here is the full process for those tanks.
Read Article →
Have questions before you buy? Find answers to the most common Cycle Tank Sealer PLUS Kit questions below, or
order the PLUS Kit now and get it shipped same day.
The right sealer for a motorcycle tank is a single-component, moisture-cured urethane that bonds to prepped metal and resists ethanol-blended fuel. KBS Gold Standard Tank Sealer meets that description: it is ready to use with no mixing or hardener, cures to a silver metallic film rated to 600°F, and permanently seals pinholes and weld seams. For a motorcycle tank up to 5 gallons, it ships as part of the Cycle Tank Sealer PLUS Kit with the stripper and prep chemicals the job needs.
Drain the fuel, remove the tank, and seal every opening. Strip any old liner with KBS Strip, then clean with KBS Klean mixed 1 to 1 with hot water, etch with full-strength RustBlast for 30 to 60 minutes, and dry the tank completely. Repair pinholes and weld seams with BackBone Reinforcing Mesh, or anything larger with KBS NuMetal Epoxy Putty. Then pour in the Gold Standard Tank Sealer, rotate for up to 30 minutes, drain the excess, and allow 96 hours to cure.
Coat the interior in one pour-and-drain coat rather than several thin ones. Pour the entire 8 oz of Gold Standard Tank Sealer into the prepped, dry tank, then rotate and roll the tank for up to 30 minutes so every interior surface is wetted, including the top. Drain all excess completely and keep rotating the tank side to side every 5 minutes while it drains so the sealer cannot pool. Stir the can by touching the bottom and lifting, never by shaking, to avoid introducing air bubbles.
A gas tank sealant has to survive constant fuel immersion, alcohol additives, vibration, and the expansion and contraction of the metal. Moisture-cured urethane handles all four, which is why Gold Standard Tank Sealer uses that chemistry rather than a paint-type or adhesive-type liner. The cured film is impervious to all fuels, alcohol additives, and most solvents, remains flexible, and withstands operating temperatures up to 600°F on a properly coated surface.
The Cycle Tank Sealer PLUS Kit contains a quart of KBS Strip, a quart of KBS Klean, a quart of RustBlast, 8 oz of Gold Standard Tank Sealer, nitrile gloves, a stir stick, and detailed instructions. The quart of KBS Strip is the only difference from the standard Cycle Tank Sealer Kit, and it is there to dissolve a previous liner or sealer. Both kits treat a tank up to 5 gallons. Buy the standard kit if the tank has never been coated.
Allow a full 96 hours for maximum cure before refilling with fuel, and leave the tank openings open so air reaches the coating. Do not put the tank in direct sunlight or near a heat source to speed it up; heating the tank does not shorten the cure and can hinder adhesion. Always test the tank with water before fuel goes back in, so any missed pinhole shows up harmlessly.
Apply Gold Standard Tank Sealer between 55 and 82 degrees F (13 to 28 degrees C). Tank Sealer is a moisture-cured urethane, so avoid rain or high humidity, since trapped moisture and gas cause bubbling in the cured film. KBS Strip works between 60 and 85 degrees F and is more effective the warmer it is, with above 70 degrees F preferred. Let the tank cool to room temperature after prep, and never seal in direct sunlight.
Pour the quart of KBS Strip into the tank, rotate it so the stripper reaches every surface, and repeat applications until the old coating is gone. A tweezers-style tool helps pull out loosened chunks. KBS Strip can be strained and reused as many times as the job needs. Rinse thoroughly afterward, then start at Step 1 of the 3-Step System. KBS Strip also removes exterior paint, so protect any finish you want to keep.
Fiberglass tanks can be sealed with the same 3-Step System, with one change: limit RustBlast contact to 2 minutes rather than 30 to 60, since prolonged contact can weaken the resin. Full coverage matters on fiberglass, and KBS recommends avoiding alcohol-blended fuels in fiberglass tanks even after sealing. Plastic and polyethylene tanks are different: they require Fusion SEP first, because Tank Sealer alone will not bond to plastic.
Use KBS #1 Thinner immediately on tools and equipment while the sealer is still wet. Cured Tank Sealer cannot be removed, so clean up right away and wear gloves while doing it. For skin contact, use #1 Thinner or lacquer thinner followed by soap and water; any remaining stain fades with time. Leave the lid off the can used to catch drained sealer until it hardens, since a sealed lid can build pressure.
