Simple Bike and gear hacks?

sandman768
Posts
7989
Joined
3/21/2014
Location
Saratoga Springs, NY US
2/26/2025 6:16am

Another one for Austrian owners: when greasing your linkage & swingarm with non caged needle bearings. Unless you like removing all those little needles and reinstalling them, leave the spacer tube the bearings ride on in place during cleaning & greasing, only slide the spacer far enough to to either side to first clean and then to grease the needles, only slide the spacer far enough over so that the needles are still held in place …

7
Lillefty27
Posts
280
Joined
5/11/2022
Location
SW, MI US
2/26/2025 7:58am
Lillefty27 wrote:
Walmart carries this Rain-X Waterless Car Wash in a blue bottle. Once I'm done washing and drying my bike, I use a hand towel to wipe...

Walmart carries this Rain-X Waterless Car Wash in a blue bottle. Once I'm done washing and drying my bike, I use a hand towel to wipe down the bike with this stuff. It's essentially SC-1 but you get A LOT more. Keeps the bike shiny and also keeps excess mud from sticking under the fenders, skid plate, fork guards, etc. Doesn't smell like SC-1 but works just as good if not better. I also enjoy detailing my bike with this stuff cleaning all the small nooks and crannies that get forgotten about regularly. 

https://www.walmart.com/ip/Rain-X-Rx-Waterless-Car-Wash-32-Oz/159580923 

Better then bulk wd 40 in a spray bottle?I use bulk shout in a garden sprayer as bike wash, and pre soak for riding gear and...

Better then bulk wd 40 in a spray bottle?

I use bulk shout in a garden sprayer as bike wash, and pre soak for riding gear and boots. Works great.

Big bottle is like $5.50 on amazon. 

 

Also works great when your old pup has an accident on the carpet, before using the carpet cleaner.

For the shining and mud repellent, sure this stuff is probably the same as WD40. I feel it more so helps with detailing the remaining dirt in tight places post wash: behind the frame, electronics, under gas tank, bars and levers etc. 

 

Not claiming its better than the rest, just been a nice switch up lately 👍

1
KHNC
Posts
624
Joined
5/24/2023
Location
East Flat Rock, NC US
2/26/2025 8:29am
Cheap cordless job site fan (both brands at HF work well) to dry your helmet and goggles between motos.Buy an old seat or seat base off...

Cheap cordless job site fan (both brands at HF work well) to dry your helmet and goggles between motos.

Buy an old seat or seat base off MX locker to use when washing your bike. Your foam will last a lot longer if you keep it dry.

Buy a good tire pressure gauge and keep track of how much time you have on your tires. Nothing helps you go fast like properly inflated and/or new rubber.

Just like go-fast running shoes. lol

1
sumdood
Posts
8714
Joined
3/11/2013
Location
San Clemente, CA US
Fantasy
2/26/2025 8:38am Edited Date/Time 2/26/2025 10:09am

Here's a dumb little trick that took me way too long to learn about. It's going to sound stupid but here it is lol. When you're moving a bike around with a dinner bell side stand, rather than hanging it on the bars or carrying it, slide it over the back fender leaning forward. I know it sounds simple and dumb and is probably common knowledge for a lot of guys, but for a long time I'd hang it on the bars and have it wobbling around on the grips. Expecting downvotes for this one 😆

10

The Shop

McG194
Posts
4113
Joined
9/7/2017
Location
Palm Coast, FL US
2/26/2025 9:54am Edited Date/Time 2/26/2025 9:56am

I like to have a dedicated track box. Figure out the tools you need on your bike and only have those tools in the box. No need to have a complete wrench set if your bike only has 3 sizes. Keeps the box light and you can buy better tools in a quantity of one or if you want you can buy specific sizes off eBay. 

Once you get your box it's a good idea to use just those tools next time you frame your bike. 

1
Nairb#70
Posts
3705
Joined
2/25/2020
Location
Ivoryton, CT US
2/26/2025 10:02am Edited Date/Time 2/26/2025 11:58am

Use lower unit marine grease on your linkage, swingarm and steering head.

2
JazzyJJ
Posts
1795
Joined
12/1/2020
Location
Nunya, WY US
2/26/2025 10:13am
McG194 wrote:
I like to have a dedicated track box. Figure out the tools you need on your bike and only have those tools in the box. No...

I like to have a dedicated track box. Figure out the tools you need on your bike and only have those tools in the box. No need to have a complete wrench set if your bike only has 3 sizes. Keeps the box light and you can buy better tools in a quantity of one or if you want you can buy specific sizes off eBay. 

Once you get your box it's a good idea to use just those tools next time you frame your bike. 

I do the same thing with a storage box with all of the spares I might need at the track. Levers, oil/lube, extra air filter etc. That way I just toss that in the truck before I ride and I have everything I need if I have a tip over or something. 

1
sumdood
Posts
8714
Joined
3/11/2013
Location
San Clemente, CA US
Fantasy
2/26/2025 10:23am
McG194 wrote:
I like to have a dedicated track box. Figure out the tools you need on your bike and only have those tools in the box. No...

I like to have a dedicated track box. Figure out the tools you need on your bike and only have those tools in the box. No need to have a complete wrench set if your bike only has 3 sizes. Keeps the box light and you can buy better tools in a quantity of one or if you want you can buy specific sizes off eBay. 

Once you get your box it's a good idea to use just those tools next time you frame your bike. 

This reminded me of the Super Hunky article where he said how come they can't make bikes with only 2 different sized fasteners, big and little lol

wwdiii
Posts
2550
Joined
4/15/2019
Location
League City, TX US
2/26/2025 10:27am

This is a good topic.  Topics like this are always interesting.


I learned this from a boat dealership where I bought a bass boat from back in the 90’s.  Every boat inside or outside looked like a million dollars.  I asked what they used.  They used pledge furniture polish.  I have to admit it works.  I used cheap Walmart furniture polish on my 24 KX450 the other night and it shined just as good as the high dollar plastic restore stuff, if not better.  Furniture polish doesn’t smell as good as Lucas Mist or Plastic Restore!

 

kNewc
Posts
1169
Joined
3/17/2017
Location
IN US
2/26/2025 10:56am Edited Date/Time 2/26/2025 10:57am

Use a plastic tote with lid to store your gear, then if the grass is wet you can use the lid to stand on so your feet and socks don't get wet.

A 3/8" T-Handle and small socket set is a lot lighter than a T-Handle set. The Motion Pro has 2, 3/8" drives so you can keep a 8mm and 10mm on a single wrench. 

 

2
BoxcarWilly
Posts
1142
Joined
10/5/2023
Location
Thunder Bay, ON CA
2/26/2025 11:14am
sumdood wrote:
This reminded me of the Super Hunky article where he said how come they can't make bikes with only 2 different sized fasteners, big and little...

This reminded me of the Super Hunky article where he said how come they can't make bikes with only 2 different sized fasteners, big and little lol

Yamaha is getting better now, but even just a few years ago I would go through and change all of the body fasteners to 8mm hex bolts. Used to drive me nuts to have 10mm and 8mm mixed through them. 

1
JazzyJJ
Posts
1795
Joined
12/1/2020
Location
Nunya, WY US
2/26/2025 11:17am
kNewc wrote:
Use a plastic tote with lid to store your gear, then if the grass is wet you can use the lid to stand on so your...

Use a plastic tote with lid to store your gear, then if the grass is wet you can use the lid to stand on so your feet and socks don't get wet.

A 3/8" T-Handle and small socket set is a lot lighter than a T-Handle set. The Motion Pro has 2, 3/8" drives so you can keep a 8mm and 10mm on a single wrench. 

 

Car mats are great to stand on as well. Just take them out and put them on the ground 

motosaki
Posts
29
Joined
4/19/2010
Location
Tecate, CA US
2/26/2025 11:53am
Lillefty27 wrote:
Walmart carries this Rain-X Waterless Car Wash in a blue bottle. Once I'm done washing and drying my bike, I use a hand towel to wipe...

Walmart carries this Rain-X Waterless Car Wash in a blue bottle. Once I'm done washing and drying my bike, I use a hand towel to wipe down the bike with this stuff. It's essentially SC-1 but you get A LOT more. Keeps the bike shiny and also keeps excess mud from sticking under the fenders, skid plate, fork guards, etc. Doesn't smell like SC-1 but works just as good if not better. I also enjoy detailing my bike with this stuff cleaning all the small nooks and crannies that get forgotten about regularly. 

https://www.walmart.com/ip/Rain-X-Rx-Waterless-Car-Wash-32-Oz/159580923 

Better then bulk wd 40 in a spray bottle?I use bulk shout in a garden sprayer as bike wash, and pre soak for riding gear and...

Better then bulk wd 40 in a spray bottle?

I use bulk shout in a garden sprayer as bike wash, and pre soak for riding gear and boots. Works great.

Big bottle is like $5.50 on amazon. 

 

Also works great when your old pup has an accident on the carpet, before using the carpet cleaner.

Lillefty27 wrote:
For the shining and mud repellent, sure this stuff is probably the same as WD40. I feel it more so helps with detailing the remaining dirt...

For the shining and mud repellent, sure this stuff is probably the same as WD40. I feel it more so helps with detailing the remaining dirt in tight places post wash: behind the frame, electronics, under gas tank, bars and levers etc. 

 

Not claiming its better than the rest, just been a nice switch up lately 👍

Choosing Walmart over Maxima....Remind me again, what teams and what events does Walmart sponsor?

My simple bike and gear hack is to support companies that support the sport. Otherwise we'll have no sport left. 

Same goes for Temu shoppers undercutting brands that pump money into the sport and work to make better products. 

3
8
crc245
Posts
1326
Joined
10/29/2007
Location
Yorba Linda, CA US
2/26/2025 12:04pm
kNewc wrote:
Use a plastic tote with lid to store your gear, then if the grass is wet you can use the lid to stand on so your...

Use a plastic tote with lid to store your gear, then if the grass is wet you can use the lid to stand on so your feet and socks don't get wet.

A 3/8" T-Handle and small socket set is a lot lighter than a T-Handle set. The Motion Pro has 2, 3/8" drives so you can keep a 8mm and 10mm on a single wrench. 

 

LungButter
Posts
8684
Joined
1/9/2016
Location
Yellow Pine, ID US
2/26/2025 12:13pm Edited Date/Time 2/26/2025 12:16pm
motosaki wrote:
Choosing Walmart over Maxima....Remind me again, what teams and what events does Walmart sponsor?My simple bike and gear hack is to support companies that support the...

Choosing Walmart over Maxima....Remind me again, what teams and what events does Walmart sponsor?

My simple bike and gear hack is to support companies that support the sport. Otherwise we'll have no sport left. 

Same goes for Temu shoppers undercutting brands that pump money into the sport and work to make better products. 

I get the sentiment here but the sport would be just fine if every "specialized" oil brand went away.  You're overpaying for that shit so that they can afford those marketing dollars to sponsor teams and run ads, the teams would be just fine without the oil companies.  Lots of them take the money they get from oil companies and go buy their own Rotella anyway 🤣

Buying knock off shit that Tusk makes is gonna hurt the sport more than buying your oils and chemicals at Walmart.

Edit to add:  That's my hack, run Rotella.  Been using it in every bike I've owned for the last 30+ years and never had an oil related failure.  Or pay 4x more for some name brand stuff and complain about how expensive this sport is, your call.

 

2
SEEMEFIRST
Posts
13598
Joined
8/21/2006
Location
Arlington, TX US
2/26/2025 12:22pm

A 1/16" cable attached to the end of the rear brake/shifter levers then over to the frame keeps grass and sticks from wedging behind the levers for when you are taking "Creative Lines" off-road.

5
2/26/2025 1:24pm Edited Date/Time 2/26/2025 5:55pm
Better then bulk wd 40 in a spray bottle?I use bulk shout in a garden sprayer as bike wash, and pre soak for riding gear and...

Better then bulk wd 40 in a spray bottle?

I use bulk shout in a garden sprayer as bike wash, and pre soak for riding gear and boots. Works great.

Big bottle is like $5.50 on amazon. 

 

Also works great when your old pup has an accident on the carpet, before using the carpet cleaner.

Lillefty27 wrote:
For the shining and mud repellent, sure this stuff is probably the same as WD40. I feel it more so helps with detailing the remaining dirt...

For the shining and mud repellent, sure this stuff is probably the same as WD40. I feel it more so helps with detailing the remaining dirt in tight places post wash: behind the frame, electronics, under gas tank, bars and levers etc. 

 

Not claiming its better than the rest, just been a nice switch up lately 👍

motosaki wrote:
Choosing Walmart over Maxima....Remind me again, what teams and what events does Walmart sponsor?My simple bike and gear hack is to support companies that support the...

Choosing Walmart over Maxima....Remind me again, what teams and what events does Walmart sponsor?

My simple bike and gear hack is to support companies that support the sport. Otherwise we'll have no sport left. 

Same goes for Temu shoppers undercutting brands that pump money into the sport and work to make better products. 

Rain-X is a label of ITW Global who has sponsored (among other things) ISDE as an event sponsor, Mitchell Falk on BWR Engines Honda, and Andy Grider Baja/Dakar.

4
Lillefty27
Posts
280
Joined
5/11/2022
Location
SW, MI US
2/26/2025 1:29pm
Better then bulk wd 40 in a spray bottle?I use bulk shout in a garden sprayer as bike wash, and pre soak for riding gear and...

Better then bulk wd 40 in a spray bottle?

I use bulk shout in a garden sprayer as bike wash, and pre soak for riding gear and boots. Works great.

Big bottle is like $5.50 on amazon. 

 

Also works great when your old pup has an accident on the carpet, before using the carpet cleaner.

Lillefty27 wrote:
For the shining and mud repellent, sure this stuff is probably the same as WD40. I feel it more so helps with detailing the remaining dirt...

For the shining and mud repellent, sure this stuff is probably the same as WD40. I feel it more so helps with detailing the remaining dirt in tight places post wash: behind the frame, electronics, under gas tank, bars and levers etc. 

 

Not claiming its better than the rest, just been a nice switch up lately 👍

motosaki wrote:
Choosing Walmart over Maxima....Remind me again, what teams and what events does Walmart sponsor?My simple bike and gear hack is to support companies that support the...

Choosing Walmart over Maxima....Remind me again, what teams and what events does Walmart sponsor?

My simple bike and gear hack is to support companies that support the sport. Otherwise we'll have no sport left. 

Same goes for Temu shoppers undercutting brands that pump money into the sport and work to make better products. 

Just sharing a small little alternative. Should every single person then be scolded for using a plastic tub instead of an Ogio gear bag? Or Tide laundry detergent instead of Muc Off soap? Or painters tape instead of an air filter cover? Or a sock to plug my exhaust instead of an FMF wash plug? Or a harbor freight bike stand instead of a Polisport foldable stand? 

I can spend my money how I want, relax.

9
motosaki
Posts
29
Joined
4/19/2010
Location
Tecate, CA US
2/26/2025 1:49pm
motosaki wrote:
Choosing Walmart over Maxima....Remind me again, what teams and what events does Walmart sponsor?My simple bike and gear hack is to support companies that support the...

Choosing Walmart over Maxima....Remind me again, what teams and what events does Walmart sponsor?

My simple bike and gear hack is to support companies that support the sport. Otherwise we'll have no sport left. 

Same goes for Temu shoppers undercutting brands that pump money into the sport and work to make better products. 

LungButter wrote:
I get the sentiment here but the sport would be just fine if every "specialized" oil brand went away.  You're overpaying for that shit so that...

I get the sentiment here but the sport would be just fine if every "specialized" oil brand went away.  You're overpaying for that shit so that they can afford those marketing dollars to sponsor teams and run ads, the teams would be just fine without the oil companies.  Lots of them take the money they get from oil companies and go buy their own Rotella anyway 🤣

Buying knock off shit that Tusk makes is gonna hurt the sport more than buying your oils and chemicals at Walmart.

Edit to add:  That's my hack, run Rotella.  Been using it in every bike I've owned for the last 30+ years and never had an oil related failure.  Or pay 4x more for some name brand stuff and complain about how expensive this sport is, your call.

 

I disagree. Core brands like Maxima (happens to be in the oil space) help progress the sport and put riders and teams on the track. They're a made in USA product that invests heavily into the categories that they sell in. I'm using them as an example but there are plenty of others - Works Connection, Renthal, Pro Circuit and FMF....etc. They all put their money back into the sport via sponsorship dollars. 

Not trying to come down on anyone just offering a perspective on product from Walmart vs. product from a moto brand. 

Also, Tusk is a RMATV house brand, at least your dollars are staying in the space. 

1
4
Falcon
Posts
12253
Joined
11/16/2011
Location
Menifee, CA US
2/26/2025 3:04pm

Oh, here's one that has helped me immensely: learn to push your bike backward. It takes some getting used to, but being able to push your bike backward using two hands on the handlebar can really save you time and frustration. (Especially if you don't have room to turn it around!) Bonus points if you learn to use the front brake lever while doing so. 

Here's another one: run your lever perches inboard as far as you can. For people like myself with long fingers, it helps me grab the lever out near the bar end. I get more leverage and easier lever pull, plus the lever is more protected in a fall. 

3
catshot
Posts
36
Joined
3/8/2024
Location
Kingsville, TX US
2/26/2025 3:13pm

On super muddy days with a quick turnaround time between motos, cover the underside of your front and rear fenders with some strips of duct tape with a 1/2 inch tab hanging off. Come in from your moto and just pull the tape off and your bike is immediately a few pounds lighter without having to scrape anything off. 

7
LungButter
Posts
8684
Joined
1/9/2016
Location
Yellow Pine, ID US
2/26/2025 3:21pm
motosaki wrote:
I disagree. Core brands like Maxima (happens to be in the oil space) help progress the sport and put riders and teams on the track. They're...

I disagree. Core brands like Maxima (happens to be in the oil space) help progress the sport and put riders and teams on the track. They're a made in USA product that invests heavily into the categories that they sell in. I'm using them as an example but there are plenty of others - Works Connection, Renthal, Pro Circuit and FMF....etc. They all put their money back into the sport via sponsorship dollars. 

Not trying to come down on anyone just offering a perspective on product from Walmart vs. product from a moto brand. 

Also, Tusk is a RMATV house brand, at least your dollars are staying in the space. 

I can understand that viewpoint for sure, and I agree.  Singling out oil companies is too much nuance I suppose.

Keeping your money in the sport is never a bad stance.

1
Rotaholic
Posts
1722
Joined
4/2/2013
Location
NZ
2/26/2025 3:43pm

For anyone that is running Gaerne SG12s, take the stupid metal toe caps off and throw them in the bin, you can thank me later

2
sandman768
Posts
7989
Joined
3/21/2014
Location
Saratoga Springs, NY US
2/26/2025 3:49pm
Rotaholic wrote:

For anyone that is running Gaerne SG12s, take the stupid metal toe caps off and throw them in the bin, you can thank me later

Why?

2/26/2025 3:54pm
Rotaholic wrote:

For anyone that is running Gaerne SG12s, take the stupid metal toe caps off and throw them in the bin, you can thank me later

sandman768 wrote:

Why?

Because it would require some sort of time machine to thank him earlier.

7
Rotaholic
Posts
1722
Joined
4/2/2013
Location
NZ
2/26/2025 3:58pm
Rotaholic wrote:

For anyone that is running Gaerne SG12s, take the stupid metal toe caps off and throw them in the bin, you can thank me later

sandman768 wrote:

Why?

Because they slip when your own your toes on the pegs and they slip on the shifter and brake pedal, they also destroy the shift and brake pedal and clutch and magneto covers. 

2
sandman768
Posts
7989
Joined
3/21/2014
Location
Saratoga Springs, NY US
2/26/2025 5:17pm Edited Date/Time 2/26/2025 5:21pm
Rotaholic wrote:
Because they slip when your own your toes on the pegs and they slip on the shifter and brake pedal, they also destroy the shift and...

Because they slip when your own your toes on the pegs and they slip on the shifter and brake pedal, they also destroy the shift and brake pedal and clutch and magneto covers. 

Fair enough…definitely scar up engine covers, especially when they get bent & stick out some….figured they offered some kind of protection for toes but maybe not…I have noticed on my 250/300 2 strokes, my left foot/boot must hit the lower exhaust pipe, right in front of the shifter, it has a bunch of tiny dings….probably from the steel toe…

Rotaholic
Posts
1722
Joined
4/2/2013
Location
NZ
2/26/2025 5:44pm
Rotaholic wrote:
Because they slip when your own your toes on the pegs and they slip on the shifter and brake pedal, they also destroy the shift and...

Because they slip when your own your toes on the pegs and they slip on the shifter and brake pedal, they also destroy the shift and brake pedal and clutch and magneto covers. 

sandman768 wrote:
Fair enough…definitely scar up engine covers, especially when they get bent & stick out some….figured they offered some kind of protection for toes but maybe not…I...

Fair enough…definitely scar up engine covers, especially when they get bent & stick out some….figured they offered some kind of protection for toes but maybe not…I have noticed on my 250/300 2 strokes, my left foot/boot must hit the lower exhaust pipe, right in front of the shifter, it has a bunch of tiny dings….probably from the steel toe…

Yeah they're awesome for trail riding with lots of rocks, or if you have to kick in foot holds in dirt or building trails but for just moto they're annoying. 

1
crc245
Posts
1326
Joined
10/29/2007
Location
Yorba Linda, CA US
2/26/2025 9:19pm

Easy and practical moto ideas: Air up tires before bike washing; You’re prepped for the next ride and helps keep tubes cleaner in the long run. A foamy bottle of Dawn and water sprayed on air filters before removal keeps dust/crumbs to a minimum and from infiltrating the airbox (especially useful on current YZF’s). PSA: Everyone should invest in a wash cover - They simply work. While on the subject of bike washing, I always use an old sprocket bolt to plug the crankcase vent breather on my KX450: More peace of mind when leaned over and really detailing the underside. Also, foam spray cannons and Scotch-Brite 7447 or 7448 pads for the bike washing win…

When installing glue-on grips, do the clutch side first. That way you can use the throttle grip to measure proper spacing; some grips spread farther inboard when installing and get stretched out. Throttle side is fixed so it’s much more difficult to mess up!

Maxima or Honda chain clean up applied with ample time before washing is a huge time saver. Any heavy duty degreaser should have the same effect, just give them a few minutes to soak in and do their thing. I start the bike washing process with this, throw in an exhaust plug, remove seat, move to airbox prep, air up tires, etcetera before going to town. 

Installing appropriate length 3/4” or 1” wide strips of loop-side from velcro on frame rails helps keep glide plate rub to a minimum. Less noticeable with plastic protection, carbon fiber accessories can rub wear spots and this keeps roost noise/hot spots on aluminum frames to a minimum.

Drilling a small hole near the ball-end of your control levers ensures they break off with room to finish the moto.

Check tire air pressure and bleed forks before every ride. Good habit and leaves no doubt that the two most important contact points between you and terra firma are sitting pretty.

With brand new bikes, it’s imperative to properly clean the brake rotors before operation. Kawasaki’s seem to have the most Cosmoline residue, and it takes a couple cleanings with brake cleaner or acetone before they pass the paper towel test…

Motul 600 or Maxima RBF brake fluids are much better quality than a majority of stock fluids. Makes an immediate improvement on KX450’s and can be used in both brakes as well as the hydraulic clutch.

Installing an hour meter and 1.8 radiator cap, along with doing a basic grease/prep job on new bikes is good practice: It’ll never be cleaner or more efficient to lube than right off the showroom. 

Rider gear wise, I wear Mobius knee sleeves under my Pod knee braces. Once tight, I throw another pair of cheapie eBay or Amazon compression knee sleeves over the braces as an in-between to keep leathers lasting longer. I’d shred most modern pants in just a couple rides before adding this extra layer. As a bonus, I replace knee brace straps less frequently and the velcro stays cleaner, longer.

Speaking of riding gear, the more protection the better. Worst case scenario, it’s always better to know you did everything you could to stay in one piece. Firm believer in quality helmets, and my personal preference is 6D.

Besides basics like staying hydrated, nutritionally fueled, maintaining proper sleep, etc., it’s always good to warm up even before getting dressed to go shred. Some movement not only warms you up, but most of us spend an hour plus in the car sitting stationary even before arriving at the track. #GetLoose!

5
crc245
Posts
1326
Joined
10/29/2007
Location
Yorba Linda, CA US
3/5/2025 2:15pm

One for all the MotoMoms and homeschool/compound kids who need some arts and craft time: Home made pit boards. Head to your local supply store, grab a 3/16” 2’x4’ piece of chalk board/white board (currently $10 or less in most markets), cut into three 16”x2’ sections, and go to town with hand-holes, stickers, rider to rider customization, etc.

Also a savings speaking to the kiddos - Start wearing ear plugs and mouth guards early. Teeth are expensive to fix and hearing loss is rarely discussed in racing circles.

 

IMG 1294 1
2

Post a reply to: Simple Bike and gear hacks?

The Latest