The boots problem, stated plainly
A head-to-toe wet-weather kit has four pieces, and this page has three. We list two motorcycle boots — the Alpinestars SMX-6 V3 and the SMX-1 R V2 — and both of them state in their own specifications that the standard version is not waterproof. Alpinestars sells Drystar and GORE-TEX variants of the same boots, and those are presumably the answer, but we have not sourced their spec pages and we are not going to rank a product from its name.
What we can tell you is what the gap costs and how riders close it. Wet feet are the single most common complaint about riding in rain, for a mechanical reason: water runs down your legs and into the top of the boot, so a waterproof boot with the pant tucked inside it is worse than a non-waterproof boot with the pant worn outside it. The Andes V4 Drystar pant on this page has the cut to go over a boot. If you are buying boots for rain specifically, look for the Drystar or GORE-TEX version of a boot you already like the fit of, check the gusset behind the entry zip, and read our boots ranking for the protection specs that do not change between the dry and wet variants.
The helmet is not part of this kit, and here is why
Riders search for a “waterproof helmet” and there is no such thing — every full-face helmet keeps rain off your face by existing. The two specs that actually decide whether riding in rain is miserable are whether the shield takes a Pinlock anti-fog insert, because a closed visor in cool rain fogs within a minute, and whether the helmet has a chin curtain to stop the updraught that carries water onto the inside of the shield. Neither is a waterproofing spec. We rank helmets for rain on exactly those features on our best helmets for rain page, and it is the right page to pair with this one.
How to spend the money, if you cannot buy all of it
In this order, and it is not the order people buy in.
Gloves first. This surprises riders every time, but hands are the first thing to get cold and wet, they are the most exposed part of you on a bike, and cold wet hands degrade your control inputs in a way a cold wet torso does not. A good certified waterproof glove is also the cheapest item on this page by a wide margin. Start here.
Jacket second. A wet torso is a core-temperature problem rather than a comfort one, and the jacket is also carrying your shoulder, elbow and back armor, so the spend does double duty.
Pant third, and this is the one most riders skip entirely — which is why we wrote what ATGATT actually means about exactly that gap. Wet legs are tolerable for a commute and genuinely dangerous on a long cold ride, because the big muscles in your thighs are where you lose heat fastest.
Boots last, by elimination rather than by preference, since we cannot recommend one yet.
What we left out, and why
Rain suits and over-trousers. A packable shell you pull on over your gear is a legitimate and cheap answer to rain, and plenty of touring riders carry one. None of them is an abrasion garment, almost none publishes an EN 17092 class, and we could not source a certification statement for one we would print. That is a sourcing limit on our side rather than a judgement on the products.
The REV’IT! Sand 5 H2O jacket and gloves. Both are waterproof, both are certified, and both are on our all-season jacket and touring glove rankings. They are not here because they are built around a Z-liner rather than a laminate or a bonded membrane, and this page is organized on membrane construction. They are excellent alternatives at a lower price, and the Sand 5 H2O glove runs to 4XL, which almost nothing else does.
Waterproof riding jeans. There is no such thing in our registry and we are suspicious of the ones that claim it. The AA-rated riding jeans we rank are Cordura denim with aramid lining panels and no membrane, and their own makers say so — see are Kevlar jeans protective for what denim actually does. If you commute in rain, buy the textile pant on this page and keep the jeans for dry days.
Anything whose membrane is unnamed.“Waterproof breathable membrane” with no brand, no water-column figure and no hydrostatic-head number is a claim we cannot check. Every piece here names its membrane — GORE-TEX, GORE-TEX with GORE GRIP, or Alpinestars Drystar — which at least gives you something to hold the maker to.