The STR is Union's budget all-mountain binding. It costs less than most Union bindings, and riders on Reddit often recommend it as a first good binding.
This review covers how the STR rides, how it compares with other Union bindings and who should spend more.
What It Is: A Budget All-Mountain Binding
The STR has a medium flex that Union rates at 5 out of 10. That makes it a good middle ground for groomers, side hits and the occasional park lap.
It mounts on 4x2, 4x4 and channel boards, so it fits almost any board. Union gives it a lifetime warranty on the baseplate and heel cup.
On the Hill: Soft Feel, Good Response
Owners call the STR a steal for the price. One rider said it is such a good, reliable binding. Another bought them for a Salomon Dancehaul for aggressive all-mountain riding. They said the STR feels super soft but very responsive, and stiff enough for high-speed carving and side hits.
One owner said they loved their pair so much they plan to buy a second pair for their next board.
Where It Excels
The STR shines for riders who want a reliable binding on a budget. One rider always recommends the STR to beginner friends over the Union Flite Pro. They said just holding them you can tell the STR is a much more solid binding.
It also suits riders returning to the sport. A rider coming back after years away asked whether the STR is comfortable and durable, and replies called it a great binding.
Where It Falls Short
The STR is a step below the rest of the Union lineup. One rider said the STR is basically a lesser version of the Union Force, which has a stiffer baseplate response for all-mountain riding. When a rider ordered the STR and received the Union Ultra by mistake, replies said the Ultra is an upgrade.
Strap durability gets one bad report for Union in general. One rider said their last two Union bindings had multiple strap problems during a 100-day season. Another reply said Union customer service will send replacement parts.
Not everyone thinks it is the best value. One rider said the Salomon Rhythm is a better binding for less money.
The "STR or Force?" Question
You'll find this question in most STR threads. Riders say the Force is stiffer, has a stiffer baseplate response and suits experienced riders who charge hard. The STR is softer and costs less.
Here's the take from owners: if the Force fits your budget and you ride hard, get the Force. If not, the STR is a great binding for the money.
Pro tip: If a strap breaks, contact Union before you buy new parts. One rider said Union will take care of you and send what you need.
Who Should Buy It
Buy the Union STR if you want a reliable, medium-flex all-mountain binding at a good price, or a first good binding to replace rentals.
Look elsewhere if you ride hard and fast and want a stiffer binding, or you need the most durable straps for a very heavy season.
Alternatives
The Union Force is the stiffer step up that riders recommend for experienced, hard-charging riders. Read our full Union Force review.
The Union Ultra is Union's lighter, higher-end binding that owners call an upgrade over the STR. Read our full Union Ultra review.
The Salomon District is another budget binding for all-mountain and park riding. Read our full Salomon District review.
Verdict
The Union STR is a solid, reliable all-mountain binding that owners call a steal for the price. It is a step below the Force and Ultra, and some riders find it soft. For riders who want a good binding without paying for the top of the lineup, it is one of the best values you can buy.
