Overview
SS-21-ST – Two Horse Straight Load Trailer
The Bar-M SS-21-ST is a dependable two-horse straight load trailer designed for horse owners who appreciate the safety, balance, and easy loading characteristics of a traditional straight-load configuration. Built with a spacious horse area, front dressing room, and rugged all-aluminum construction, the SS-21-ST delivers durability, comfort, and practicality for every trip.
Constructed on an all-aluminum frame, the SS-21-ST provides lightweight towing and long-term corrosion resistance without sacrificing strength. The horse area features two straight-load stalls separated by a sturdy divider, along with HDPE impact wall liners, rubber flooring, LED stall lighting, roof ventilation, and large sliding windows that promote excellent airflow and horse comfort during travel.
A full rear ramp with upper tail doors makes loading and unloading simple and safe, while drop-down feed doors provide convenient access to horses while on the road. The spacious front dressing room offers ample storage for saddles, tack, and equipment, helping keep everything organized and within reach.
Whether you’re heading to horse shows, trail rides, clinics, or weekend adventures, the SS-21-ST delivers the reliable performance and quality craftsmanship horse owners have come to expect from Bar-M Trailers.
Key Features
- Two-horse straight load design
- Front dressing room
- All-aluminum frame and construction
- HDPE impact wall liners
- Rubber flooring
- Straight-load divider between stalls
- Large sliding windows for ventilation
- Drop-down feed doors
- LED stall lighting
- Interior and exterior horse ties
- Rear ramp with upper tail doors
- Electric brakes on all axles
- One-piece seamless aluminum roof
- Lightweight and corrosion resistant
- Built for comfort, safety, and durability
The SS-21-ST combines traditional straight-load safety with modern construction and convenience, making it an excellent choice for horse owners seeking a practical, durable, and easy-to-maintain trailer for years of dependable use.
Floorplan
Photo Gallery
Spec Drawings
Standards
Exterior |
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| (1) Door tie back on the rear road side tail door and (1) on the curb side tail door |
| (1) Door tie back on the road side dressing room door |
| (1) Exterior horse tie on the curb side rear hoop |
| (1) Exterior horse tie on the road side rear hoop |
| (15) Upper clearance lights. (5) on rear, (3) on road & curb side top rail and (4) on front nose top rail |
| (2) Amber reflectors. One installed on road side front and one on curb side front, mid way up |
| (2) Amber reflectors. One installed on road side nose and one on curb side nose, just below top rail |
| (2) Lower clearance lights (1) on curb side & (1) on road side just forward of rear hoop |
| (2) Red reflectors. One installed on road side rear and one on curb side rear, mid way up. |
| Bar-M logo on top-rail. Both road and curb sides near the rear of the trailer on the top rail (ES-SL ONLY) |
| Curbside door on non-side ramp Street side door on side ramp model |
| Diamond plate nose guard on lower section of nose sheets |
| Drip cap above dressing room door made from aluminum angle |
| Emergency break away battery and switch |
| License plate light located curb side of the rear door, toward the lower section of the trailer |
| Location for license plate on road side of rear ramp, toward the lower section of the trailer |
| Red/White conspicuity tape along the entire bottom side of rear |
| Red/White conspicuity tape along the lower side of road and curb side walls (in sections) |
| Side ramp model to have a ramp with tail door on the curb side near front of horse area |
| Single set of LED turn/stop/tail-lights. Installed about 18" above horse area floor |
| Tear drop style aluminum fender with top side mounted fender light |
| Three piece skin colored nose sheet. Nose sheets are riveted at the seams and center posts |
| Top-wind jack installed at the trailer coupler. |
| White conspicuity tape in an "L" shape at the top of each corner of the rear swing door |
Frame and structure |
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| (4) Steel wheels & (1) steel wheel for spare (15" LR D). Spare tire installed in the dressing room (2 horse model) |
| 2x6 Pressure treated wood floor with rubber mats |
| Aluminum frame |
| Aluminum one-piece seamless roof sheet |
| Aluminum side wall posts and aluminum roof bows. Side wall posts are 1.5″ deep and typically on 16" centers |
| Dexter spring axles (3,500lb is standard) |
| Electric brakes on all axles |
| Exterior aluminum skin (.040, white is standard). Nose sheets are riveted |
| Flooring cross members (commonly on 12" centers). |
| Heavy Duty 2 5/16" coupler with safety chains |
| Unit to be 7' 6" tall |
Horse area interior |
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| (1) Horse divider between each stall |
| Built in partition wall with HDPE liner between front horse area and dressing room |
| HDPE smooth black high impact wall liner on rear side of dressing room wall |
| HDPE smooth black high impact wall liner on road side and curb side of horse area |
| Walk-thru door in wall between the horse area and dressing room |
Popular Options
Popular options |
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| Add a rear load light with switch in the rear hoop |
| Add a window with bar guards in each of the two upper tail doors |
| Add exterior aluminum running boards |
| Black skin upgrade from white skin |
| Charcoal skin upgrade from white skin |
| Upgrade the standard 3,500lb sprung axles to 3,500lb torsion axles |
| Upgrade to 6 lug, 5,200lb torsion axles and 15" Load range E tires. Includes all tires |
| Upgrade to aluminum wheels (does not include the spare) |
| Upgrade to an aluminum floor from a wood floor |
Warranty
BAR‑M Limited Warranty
At BAR‑M, we take pride in building trailers that are made to last. That’s why we back every trailer with a 7-Year Structural Warranty and additional coverage on BAR‑M manufactured components. Our warranty reflects our commitment to quality, craftsmanship, and customer satisfaction.
Warranty Highlights
- 7-Year Structural Warranty
- 1-Year Coverage on BAR‑M Manufactured Components
- 1-Year Coverage on Maintenance Items
- Warranty Registration Required Within 60 Days of Purchase
For complete coverage details, exclusions, limitations, and warranty procedures, please download and review the full BAR‑M Limited Warranty document.
