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AD1 Motorcycle Pants

SKU: 165

Availability: In stock


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Product Description


The AD-1 is a fully seam taped, unlined, HT600 Denier Nylon three layer GORE-TEX® jeans-cut pant, with full length separating side zips. The outside zippers have full length inner and outer weather flaps to help the pants go on and off fast and keep rain and wind out.

Other details include: A diamond gusset in the crotch for greater sitting comfort; An inner gusset behind the front fly which improves water resistance; The knees have a greater bend around a larger radius (than the Darien pant knees), allowing more freedom of movement. The Scotchlight® reflective ankle tab loop strips are radial, for a natural and secure adjustment around the calf and lower leg. The front pockets have hook and loop secured cover flaps so items inside are secure. (And you won't lose your change or bike keys when the pants are laid over the back of a chair…). A vertical zippered cargo pocket is on top of the right thigh and a horizontal opening pocket to the top of the left thigh. Available in even waist sizes, 30–46 regular and long. An Aerostich Money Belt (#1854) is included with these pants. Black, Grey or Tan. Imported and Made in USA

If you are interested in suspenders (?) we recommend these #1815-1349. Several models and styles are available.

AD 1 Features
AD 1 Pants Owners Guide
Sizing Chart
A Self-Fit Calculator
TF Pad Removal and Replacement
Darien vs. Darien Light
Darien AD1 Utility Pants Comparison
Editorial Review, Aerostich AD1 Light Pants, Adventure Motorcycling.com

Additional Information

Additional Information

More Info
  • TOUGH: HT600 Denier Nylon GORE-TEX® fabric
  • COMFORTABLE: Diamond gusset crotch panel
  • IMPROVED WATER RESISTANCE: Front fly inner gusset
  • FREEDOM OF MOVEMENT: Knees bend around a larger radius
  • IMPROVED REFLECTIVE ANKLE TABS: New radial loop strips
  • COVERED FRONT POCKETS: Hook & loop flap
  • ADDITIONAL STORAGE: Vertical zippered cargo pocket
  • OPTIONAL PROTECTION: Integrated Hook & Loop for Hip Pad attachment


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Customer Reviews (74)

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AD1 Best pantsReview by Jason S.
I'm 5'7" and 150lbs. I bought the 30 waist, normal size I wear, AD1 pant and they fit perfectly on and off the bike. I'm a beginning rider with a Honda CBR250. I tried many pairs of over-pants and these were by far the best fit with the waterproof and pocket options. I haven't been on the freeway in them yet but normal commutting they are warm and dry in the rainy Seattle climate. I can where any pants I like and long underwear under them and don't feel cramped. (Posted on 10/20/18)
Excellent pants, inadequate beltReview by JT
These pants are outstanding in every way...except for the included Aerostich Money Belt. The cheap plastic buckle failed the first time I tried it on, without even using much force. Thankfully I had also ordered the "Last Chance HD Totally Serious Belt" at the same time, which is quite robust. (Posted on 7/28/18)
Very satisfiedReview by Craig
I recently began riding again, so I have purchased several articles of clothing, many from Aerostich. The AD1 pants exceeded my expecations in fit, quality and functionality, and the more I wear them the more comfortable they become. I highly recommend them. (Posted on 2/18/18)
Great quality,value and fitReview by Randy
Received my AD 1 pants today and once again impressed with the quality of Aerostich products. These will replace my old Darien pants which have served me very well. Just a sizing note to anyone considering purchase. I am 6.0 feet tall, 170 pounds with a 34" waist and 33" inseam. I ordered a 36 Tall with hip protectors and they fit perfect over my jeans with just the right amount of room. The AD 1 does have a little lower hip cut than the Darien but still can wear a belt on the jeans.
Thanks again Aerostich, well done! (Posted on 9/29/17)
AD-1: Pricey but Good!Review by Stinky Feet
I like Darien over pants, I’ve worn a pair for over ten year. The problem is, they leak, right into the crotch area. Mine have leaked from the first time I wore them in the rain, and leaked thereafter every time it rained. I eventually took to wearing a pair of rain pants over these over pants when I was expecting a hard rain, and eventually had them re-taped by A/S. They leaked the first time it rained. I coated the inside and outside seams with sealant, they still leaked. In the crotch.

So after 10 years I decided it was time to actually find a pair of waterproof overpants that were actually waterproof. Did not look to Aerostich, they had their chance and blew it, and I wanted something new. I looked at everything I could find, and tried a number of over pants on at Performance Cycle in Denver. I have a Klim jacket(also have two Aerostich jackets, so hush), and looked at their over pants. The Torrent overpants are nice (about $320—cheaper than AD’s), but they have no pockets! Deal breaker for me, I need pockets.

Note there is a clear distinction with manufacturers between riding pants and over pants. Riding pants are something you put on and take off once a day, and ride in them all day. You take off you boots to put them on, and you have to take off your boots to get out of riding pants: Not good for commuting. Over pants are put on over clothing and boots, and are removed as often as you like and don’t require removing your boots to do so. These are actually pretty hard to find.

After looking at many pairs of over/riding pants, I was drawn back to A/S. A/S overpants come in two flavors, Darien and a newer designed pants, called AD-1 (Asian designed?). The AD combined the best features of both the Darien and the Roadcrafter (got one of these, too) pants: lots ‘o’ pockets, (two on the front thighs, just like the Roadcrafter Suit), with flaps over the top to keep out rain, and keep in change and keys and such, and a (new) gusset at the bottom of the zipper to keep the rain out of your crotch. They also are as good as or better—quality/construction-wise—as anything I saw on my pants search. There’s also the advantage of years of evolution in the design. It shows.

So I ordered a pair of AD-1 in 40 L. I almost sent them back because the “L” refers to two extra inches in the legs, not in waist rise, as you might expect. I’m Wookie sized, but two extra inches in the legs is a lot even for me, and the hem in back was almost touching the ground, even with boot on. I was non plussed, until I got on the bike, and then it all became clear….they fit perfectly with knees bent on the pegs! No hem riding up to over the top of my boots, and low enough on the boot top to keep water out. Much better in the rain and cold.

And after this summer in Colorado, I’m very familiar with rain: These pants are waterproof, I knew A/S could do it!! I’ve been in a couple of storms this year that were as bad as anything I’ve ever ridden in and the pants worked just fine (as they should!), no leaky pants, no wet skivvies. At last.

Downsides? Noticeably warmer than the previous pair of Dariens, almost can’t wear them above 85 degrees. The belt which comes with the pants is OK, but the buckle is very cheap and fragile. Wish they’d put a better buckle on the belt, only a matter of time until it shatters. I’ll probably end up getting or making my own.

Recommended? You bet!

(Posted on 8/28/17)
Solid Riding PantsReview by LateToTheGame
I purchased the AD1s as replacement for my Darien Pants. I found the AD1 gentler curve at the knee more comfortable for long periods in the saddle. Also, I like the thigh pockets on the AD1s. Functionally I don't think the two pants are very different, since materials are nearly the same.

Fit is good for me. I'm a 36" waist in most pants. My 38" AD1s accommodate hip pads. I went 2" longer than my normal pants length, and that gives me good coverage over boots. The velcro adjustments at the bottom keep most air out, or let more in, depending on what I want that day. The cut is comfortable in the saddle, both at torso and knees. The fabric is heavy, much heavier and stiffer than I'm used to in outdoors gear. However, none of my other outdoors pursuits involve possibly skidding down the pavement at high-speed, so I'm happy with the stiff, bulky fabric. Less happy with the side zips. These appear quite sturdy, yet one slider stuck on me on my 3rd ride in the pants, something that's never happened to the much lighter sliders on my other outdoors pants over years of mountaineering and ice climbing. What gives?? I have yet to try the velcro thigh map pocket, but I think it will be useful. The window on my tank bag is small, and I think I'd appreciate having a map handy, even if I don't look down at my thigh while riding. That's what those quick pull offs are for.

I have yet to test these in serious rain. I've ridden in fairly cool weather, with high winds and spits of rain. The AD1s are encouragingly windproof, and shed moisture nicely. Bug impacts less so, but what does shed that goo?

Suggestions for improvement?

1. Someone else suggested not using fully-separating side zips and I agree. I have never released the zips at the top, and once I have the hip pads velcroed in place I don't want to release the tops. Long single-slider zips would be just fine.

2. Maybe a little higher cut in back. I'm pretty good with the fit, but if I have to make a suggestion...

That's about it. I like these pants. They give a feeling that I will stay reasonably dry if I ride in the rain, and that I might survive coming off the bike should that happen. (Posted on 6/26/17)
AD1 Pants The Genuine DealReview by Pete
Wanted a new long wearing overpant in 500 Denier (just like my +13 year old Darien) with full side of leg zippers, & secure (velco) pockets. You delivered all~ in Aces & Spades! Pants are excellent fit, -sized as my jeans, fit over street wear (no problem). Keep up the fine work of producing Quality goods for Motorcyclists! (Posted on 6/1/17)
Only piece of gear that kept me dryReview by HKsMike
Ordered my AD1s at the Washington DC pop up store complete with alterations. I told the ladies I needed in time for a cross country trip. True to their word the pants arrived a week before my departure date. On the day we left, the weather was wet and evolved to REALLY wet and cold. After 10(+) hours in the saddle, my jacket (Darien waxed cotton that I should have rewaxed), gloves, boots and I think my helmet were soaked through, but the AD1s kept my legs perfectly dry. Aerostich gear is pricey but always works as advertised! Thanks guys! (Posted on 4/23/17)
Great pantsReview by Mark
I've had my AD1 pants for about 3 years. Still completely waterproof. Zippers still work like new. Bad weather no longer bothers me! If I remember, Aerostich says you will ride more with their gear, and that has been true for me; several trips have been taken that I would not have gone on with my old gear due to fear of getting wet and cold. (Posted on 12/27/16)
First ImpressionsReview by Mitch
Ordered both the Darien and the AD1. The Darien fit wasn't for me. I agree, the AD1 fit is more like jeans. My normal jean size fit just about right. If I could change one thing I'd want just a tad more room in the thighs to make them roomier when seated. But they do fit well and will work fine. Both the Darien and the AD1 are built like tanks, and almost as heavy. Seriously, they are really heavy duty. But in a hard get-off it gives me the confidence that these pants will provide good protection. Overall, I am pleased. In a couple weeks I'll test them on an adventure ride and update the review. (Posted on 9/5/16)

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All in-stock Aerostich products and RiderWearHouse Catalog items ordered before 2pm CST will be shipped within 2 business days. (If a specific size and color of Roadcrafter suit is not in inventory, we will notify you with an estimated delivery date. Production time varies.) All standard Aerostich items may be sent back for a refund, but the item(s) being returned must be in new condition.

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We do not charge or cover duties, taxes or brokerage fees. FedEx may charge brokerage fees for some countries. You will be responsible for these charges.

Gear: Fashion and Style vs. Equipment

There’s a lot of ‘noise’ in the rider-gear market space the Aerostich Darien jacket occupies, about how ‘new and improved’ similar jackets are. Other companies making these kinds of jackets restyle them and revise them every year or two, telling riders that if three zippers is good, six or seven zippers is better.

What all the ‘noise’ amounts to is fashion and style being presented in the guise of technology which supposedly is rapidly ever-advancing in this area. Except armored waterproof textile jackets are not the same kind of technology as computers, or even motorcycles. Seven zippers are not better than three, if only three are functionally needed. What counts is ease of use, durability, fit and function. The pioneering of this type of gear was done by us twenty and thirty years ago. (Combining lightweight breathable-waterproof highly abrasion-resistant synthetic fabrics, seam-sealing, ergonomically more useful vents and pockets, reflective materials and energy-absorbing foams and plastics.)

Since then, just like added decorative stitching on branded ‘designer’ jeans turns a pair of useful, comfortable and durable work pants like Levi’s 501’s into a fashion, all the noise about new tech in jackets like the Darien is mostly fashion BS masquerading as technological improvements. It’s not real.

Classic black leather ‘zipper’ biker jackets have been popular world-wide for many decades. There are versions at many price points and in some circles this jacket has become a fashion cliché having little to do with actually riding a motorcycle. But for many riders it remains a great equipment choice that has changed only very slightly over the years — because it works so well. You’ll find the original versions of these jackets at Langlitz, Shott and several other pioneering leather companies. Similarly, you’ll find the original British waxed cotton Belstaff and Barbour rider’s jackets and pants still being produced in their original patterns because they remain excellent functional rider’s gear.

The ‘latest-greatest’ is usually more style and fashion based, and original equipment is nearly always more utility-tool based. It does not change from year to year any more than Levi’s 501’s. Many riders are unlikely to admit they are buying ever-changing fashion and style when they believe they are getting some kind of improved technology, but that is a truth. None of the regularly restyled ‘teched-out’ sportswear for riders comes in as many closely-spaced sizes as the Darien does, and none is as functional and equipment-y as a Darien.

The Aerostich Darien is the original advanced technology breathable-waterproof impact-armored synthetic (nylon) textile rider’s gear, and just like the above-mentioned other examples of specialized rider’s clothing, it is similarly more equipment than fashion. For historical reasons.

Dariens are available ‘off-the-rack’ in eleven closely-spaced graded sizes and six colors. Complete repair service and several optional fit alterations insure years of superior service.

"The Darien and AD1 pants fit a little different…The Darien's fit like khaki 'Docker'-type chinos and dress pants. They have a straight waistband and a higher rise than jeans. The AD1's have a lower rise and a slightly conical waistband that is angled a bit lower in front. So these fit more like old-school denim jeans. I slightly prefer the AD1's fit."

- Mr. Subjective.

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