The KYT TT Course is a full-face helmet whose visor (shield) turns on a rotating mechanism at each side of the shell. KYT TT Course visor removal takes a few minutes and needs no tools: you open the visor fully, hold a small release lever on the mechanism and turn the visor off its mount. This guide follows the sequence in the owner’s manual KYT publishes for the TT Course, and adds what to check before you ride on the new visor.
Aftermarket visors for KYT helmets
The short answer: raise the visor until it stops in its fully open position. On one side, slide the release lever on the mechanism and keep holding it, then rotate the visor and pull that side outwards at the same time. Repeat on the other side. To fit a visor, line its round seat up with the rotation ring, slide the lever and press until the hooks drop into their slots.
Before you start: check the helmet is a TT Course
KYT names its helmets with short codes, and several of them sound close to TT Course. A visor is cut for one shell opening and one pair of side mechanisms, so the model name on the label matters more than the overall shape of the helmet. Some listings in our catalogue carry the TT Course name alongside another model, and a shared listing name is not proof that two helmets take the same visor.
- Read the label. Look for the model name on the label inside the helmet before you order anything.
- Compare the old visor. Hold the listing photo next to the visor you are replacing and compare the side mounts and the lifting lever.
- Look for the insert pins. KYT describes the TT Course visor as Pinlock-ready, and a Pinlock-ready visor normally has two small pins on its inside face.
If you are not sure which model you have, our visor finder narrows it down by brand and model. Our overview of visors that fit KYT helmets shows how the rest of the range is grouped.
How the TT Course visor mechanism works
Two different controls are involved, and confusing them is the usual reason a visor refuses to come off. The first is the lifting lever on the visor itself, which you use every time you open it on the road. The second is a smaller release lever on each side mechanism, which you only touch when the visor is coming off or going back on.
According to the manual, you open the visor by pushing the lifting lever lightly outwards. That frees a tab from its seat under the gasket so the visor can rise. Closing works the other way round: you lower the visor until the tab is caught in its seat, which is the lock system KYT describes for holding the visor shut while you ride.
The manual describes two locked positions, fully closed and fully open, with intermediate steps between them. It says that while riding the visor must never be left in an intermediate step, and that it should always be worked by the lifting lever. Pushing on the clear area instead leaves marks and, over time, scratches right in your line of sight.
What you need for the job
The swap is done by hand, so the preparation is mostly about protecting the paint, the mechanisms and the new visor’s surface.
- A folded towel or the helmet bag to rest the helmet on, so the shell cannot roll
- Two clean microfibre cloths, one dry and one slightly damp
- Warm water and a drop of neutral soap for cleaning the mechanism seats
- The replacement visor, with any protective film left on until it is fitted
- A screwdriver that suits the mechanism screws, only if you later need to adjust the seal
Take off rings and watches, and wash your hands first. Grease from fingers on the inner face of a new visor is hard to shift once it has been through a few warm, damp rides.
KYT TT Course visor removal, step by step
These steps follow the removal sequence in the TT Course manual. If the diagram in your copy of the manual differs, follow the diagram, because it is drawn for your helmet.
- Set the helmet down. Rest it on the towel with the chin bar facing you, so both side mechanisms are easy to see.
- Open the visor fully. Raise it until it stops in the fully open position. The manual starts here because this is the position the visor is designed to leave the mechanism from.
- Slide the release lever and hold it. Find the lever on one side mechanism, slide it and keep it under tension. Letting it go too early is a common reason the visor stays put.
- Rotate and pull together. While holding the lever, rotate the visor and at the same time pull that side outwards, away from the shell. It should come free without force.
- Repeat on the other side. Release the lever, move round and do the same on the second mechanism. Lift the visor clear and lay it inside face up on a clean cloth.
If one side will not move, stop and check that the visor really is at the top of its travel before trying again. Prising it with a screwdriver or a coin is how mechanisms crack, and a cracked mechanism is a bigger repair than a visor.
Clean the seats before the new visor goes on
The manual asks for every part to be perfectly clean before a visor is fitted: the seats on the helmet and the areas of the visor that touch the moving parts. Grit in the rotation ring makes a visor stiff, and it can stop the visor settling into its locked positions.
- Wipe each mechanism with a cloth dampened in warm water and a drop of neutral soap.
- Clean the rubber gasket around the opening, including the seat the closing tab drops into. Our guide to cleaning a motorcycle visor seal covers this part of the job in detail.
- Dry everything with the dry cloth and give it a few minutes before refitting.
Stick to water and mild soap. The manual warns against alcohol, petrol and other solvents, and against window cleaners that may contain alcohol. It also suggests demineralised water where you have it, and avoiding water with a lot of chlorine.
Fitting the new visor
- Handle it by the edges. Remove any protective film, keeping your fingers off the area you look through.
- Open the mechanisms fully. Each side should be in the fully open position before the visor goes near it.
- Line up the rotation seat. Position the visor so the round seat on the visor sits in the rotation ring on the mechanism.
- Slide the lever and press. Slide the release lever, then press the visor lightly so its hooks go into the slots on the mechanism.
- Do the second side. Repeat the same three movements on the other mechanism.
Test it before you ride. The checks in the manual are that the visor is firmly fixed to the helmet, that it rotates freely, and that it locks correctly into its locked positions. If it does not, KYT says not to use the helmet and to have it checked by authorised personnel.
If air or water gets in around the closed visor
A new visor can sit slightly off the gasket, and a mechanism can drift after a long period of use. The TT Course manual covers both cases with an adjustment you make with the visor removed.
- Open the visor fully and remove it as described above.
- Loosen the three screws on the mechanism without taking them out, so the mechanism stays assembled.
- Shift the whole mechanism a little horizontally, then tighten the screws again.
- Repeat on the other side, shifting that mechanism in the same direction as the first.
- Refit the visor and check that it closes easily and sits against the gasket all the way round.
Do not swap the mechanisms between sides. The manual states that they are not interchangeable, so if you ever take one off the shell completely, note which side it came from before you put it down.
Choosing a replacement visor for the KYT TT Course
Each visor in our KYT TT Course visor range is listed for that model by name. The table sets out what each part is for, with a guide to read if you are weighing it up.
| Part | What it is for | Read more |
|---|---|---|
| Replacement visor for the KYT TT Course | Swapping a scratched, hazed or scuffed visor for a clean one | clear replacement visors explained |
| KYT TT Course photochromic visor | A visor its listing describes as darkening in bright sun and turning near-clear again as the light drops | how photochromic visors work |
| Anti-fog insert for the KYT TT Course | Keeping the inside of the visor from misting up in cold or wet weather | anti-fog inserts explained |
For a full comparison of light-reactive options, see our range of photochromic visors. Tinted versions of any visor need care in Great Britain, which the law section below explains.
The manual says to replace a visor at once if it is dirty or badly scratched enough to cause unusual reflections or distortion, because that can affect safety. Rule 84 of the Highway Code for motorcyclists makes the same point: “Scratched or poorly fitting eye protectors can limit your view when riding, particularly in bright sunshine and the hours of darkness.” If your visor is only lightly marked, our guide to removing scratches from a motorcycle visor explains what can be polished out and when it is time to replace it.
Anti-fog options for the TT Course visor
KYT describes the TT Course as ready for a Pinlock insert, which is sold separately and not included with the helmet. The manual also calls the standard visor scratch resistant and anti-fog, and its cleaning advice of warm water and neutral soap is aimed at keeping that anti-fog effect working.
Our KYT TT Course anti-fog insert is listed by model name. Its product page says most of our inserts fit between two small pins on the inside of the visor, so check that yours has them, then take the visor off, clean the inside with a dry cloth and follow the fitting guide in the pack.
A visor swap is a convenient moment to fit an insert, because the visor is already off the helmet. For the wider picture, our guide on how to stop helmet visor fogging covers vents, breathing and cold-weather habits. When the insert needs a wipe, the steps in our guide to cleaning a Pinlock-compatible insert keep its coating intact.
The law in Great Britain: the marking on the visor is the test
In Great Britain, whether a visor may be used on the road depends on the marking on that individual visor, not its colour or the name of its tint. The Motor Cycles (Eye Protectors) Regulations 1999 prescribe BS 4110 and require eye protection to be marked with an approved certification mark of an approved body. A visor is only road legal in GB if it carries that marking.
Iridium, mirrored and dark smoke visors transmit too little light to be legal for road use in Great Britain, day or night. The TT Course manual makes a similar point in its own words: darker visors are not homologated and are intended for race track use only.
Selling eye protection for road use that is not of a prescribed type is itself an offence under section 18 of the Road Traffic Act 1988. That is why ClearLine never describes any visor as approved or certified: we do not check the marking on individual items. Read our guide to tinted visor law in Great Britain for the detail, and riders in the US can start with our guide to visor tint rules in the US.
Troubleshooting after a visor swap
Why won’t the TT Course visor come off?
Usually the visor is not quite fully open, or the release lever was let go too soon. Open the visor to the top of its travel, slide the lever and keep holding it, then rotate and pull in one movement. If it still resists, look for grit around the mechanism rather than forcing it.
Why does the new visor not lock shut?
Check that the hooks on the visor have gone fully into the slots on both mechanisms, and that the closing tab reaches its seat under the gasket. A visor seated on one side only will close crookedly. If both sides are seated and it still will not lock, the mechanism adjustment described above is the next step.
Why does the visor feel stiff when it moves?
Dirt in the rotation ring is the usual cause. Take the visor off, clean the seats with warm water and neutral soap, dry them and refit. The manual says a visor that does not rotate freely after fitting should not be used until the helmet has been checked.
Looking after the visor and mechanism
The manual asks you to take the visor off before cleaning the inside of the helmet, and to refit it only once the cleaning products have fully evaporated. It also warns that petrol fumes and solvents can damage the visor, so do not leave the helmet resting on the fuel tank for long.
Before each ride, give the visor the check that rule 83 of the Highway Code asks for: “Before each journey check that your helmet visor is clean and in good condition.” Our full guide to cleaning a motorcycle helmet visor covers technique in more depth.
For the other models in the range, browse our visors for KYT helmets. This guide was written by the ClearLineMoto team. ClearLine is not affiliated with KYT, and every part we list is described by the helmet models it fits.
Visors and inserts mentioned in this guide
- KYT TT Course Replacement Visor — Iridium, Smoke, Clear Tints
- See the TT Course photochromic visor
- KYT TT Course Anti-Fog Insert
- All visors and inserts for the KYT TT Course
Frequently asked questions
Do you need tools to change a KYT TT Course visor?
Not to remove or refit it, because the release lever on each side mechanism is worked by hand. You only need a screwdriver if you are adjusting the mechanisms because the closed visor lets in air or water.
Will a visor listed for another KYT model fit the TT Course?
Only rely on a listing that names the TT Course. A visor is shaped for one shell opening and one pair of mechanisms, and a listing that names several models is not proof that they share a visor. Check the label inside your helmet and compare the old visor before ordering.
Can I ride with the visor part-way open?
The manual says no. It describes two locked positions, fully closed and fully open, and says that while riding the visor must never be left in one of the intermediate steps between them.
Does the TT Course visor have a UV filter?
KYT lists the visor supplied with the TT Course as polycarbonate and scratch resistant, with UV380 ray filters. That describes the original visor, so for a replacement check what its own listing states.