AMPLock vs Proven: Which Trailer Lock Should You Buy?
Our top picks
Proven Industries Model 2516
Custom fit wraps the coupler, little room for tools.
$250 (provenlocks.com list)
Check price at Proven ↗AMPLock BRP-2
Push-and-lock, no tools.
$129.99 (Strong) or $269.99 (Ultimate), amplock.com list
Check price at AMPLock ↗Proven Industries Model S175
Proven's lowest-priced coupler lock.
$120 (provenlocks.com list)
Check price at Proven ↗
Comparison
| Lock | Best for | Fits | Price (approx.) | |
|---|---|---|---|---|
| Proven Industries Model 2516 | Proven: 2-5/16 in trigger/thumb latch | Most 2-5/16 in trigger- and thumb-latch couplers | $250 (provenlocks.com list) | Check price ↗ |
| AMPLock BRP-2 (Ball Coupler Lock, Flat Lip) | AMPLock: flat-lip 2 in or 2-5/16 in | 2 in and 2-5/16 in straight (flat) lip ball couplers | $129.99 (Strong) or $269.99 (Ultimate), amplock.com list | Check price ↗ |
| Proven Industries Model S175 | Proven budget: 2 in A-frame or straight | 2 in A-frame welded-on and straight bolt-on couplers (per maker) | $120 (provenlocks.com list) | Check price ↗ |
How we chose: picks are based on published specifications, materials, fit charts, manufacturer information and patterns in owner reports. We have not lab-tested these locks. Prices are approximate list prices seen on maker sites in October 2026 and change often.
Our picks in detail
Proven Industries Model 2516
Who it is for: Owners of valuable 2-5/16 in trailers stored unattended.
- Custom fit wraps the coupler, little room for tools
- 1/4 in steel, tubular key
- Keyed-alike option across the range
- Can capture most safety chain hooks
- Expensive
- Must match your exact coupler model
- Heavy
- Type: Coupler lock (custom-fit)
- Fits: Most 2-5/16 in trigger- and thumb-latch couplers
- Build: 1/4 in steel, black powder coat, puck lock, 7-pin tubular key
- Keyed alike: Yes (keyed-alike option across Proven line)
- Price: $250 (provenlocks.com list)
Can secure most 5/16 in safety chain hooks per maker; check the fit index for your coupler.
Check price at Proven ↗AMPLock BRP-2 (Ball Coupler Lock, Flat Lip)
Who it is for: Owners of 2 in or 2-5/16 in flat-lip couplers who want a custom-fit ball lock.
- Push-and-lock, no tools
- Disc cylinder
- Two security levels and price points
- 5-year warranty with key registration
- Flat-lip couplers only
- Ultimate version is $269.99
- Type: Ball-style coupler lock (custom-fit)
- Fits: 2 in and 2-5/16 in straight (flat) lip ball couplers
- Build: Ductile iron and stainless steel, disc cylinder, push-and-lock; Ultimate (10 lb) and Strong (5 lb) levels
- Keyed alike: Yes (keyed alike across AMPLock products)
- Price: $129.99 (Strong) or $269.99 (Ultimate), amplock.com list
Fits flat-lip couplers only; check your coupler shape before ordering.
Check price at AMPLock ↗Proven Industries Model S175
Who it is for: 2 in trailers wanting Proven quality on a smaller budget.
- Proven's lowest-priced coupler lock
- Fits A-frame and straight-tongue couplers
- Made in USA
- 2 in couplers only
- Slides over the flange rather than fully wrapping like the 2516
- Type: Coupler lock (slides over coupler flange)
- Fits: 2 in A-frame welded-on and straight bolt-on couplers (per maker)
- Build: Made in USA, Cobra tubular lock core standard, disc-detainer upgrade optional
- Keyed alike: Yes (keyed-alike option)
- Price: $120 (provenlocks.com list)
Proven calls it its most affordable coupler lock.
Check price at Proven ↗
Side-by-side from maker specs
| Proven Industries | AMPLock | |
|---|---|---|
| Made in | USA (lock bodies) | Canada (North American materials) |
| Design | Custom-fit shell around the coupler; 2516 can capture most 5/16 in chain hooks | Two-part push-and-lock ball plus outer shield |
| Lock core | Cobra 7-pin tubular standard; disc-detainer upgrade; Medeco/Abloy on request | Disc cylinder, controlled key number system |
| Example price | 2516 $250; S175 $120 | BRP-2 Strong $129.99; Ultimate $269.99 |
| Warranty | Lifetime | 5 years, register key within 30 days |
| Keyed alike | Yes, across cart | Yes, across AMPLock products |
| Shipping/returns | Same-day shipping before 2pm EST | Free US/Canada shipping, 30-day returns |
Which should you choose?
- Coupler shape decides first. Check the maker fit index; both brands ask for a photo if unsure.
- You want chains secured too: Proven 2516 is designed to hold most chain hooks.
- You want the fastest fitting: AMPLock push-and-lock needs no tools.
- Budget for a 2 in trailer: Proven S175 ($120) or AMPLock Strong ($129.99).
- Longest warranty: Proven (lifetime) vs AMPLock (5 years with registration).
We have not tested these locks ourselves; this comparison uses manufacturer information only. For every other option, see the coupler lock hub.
Read the Proven review
For every Proven model, price and lock core option, see our Proven trailer lock review.
Sources
- Proven Model 2516: https://www.provenlocks.com/products/model-2516
- Proven Model S175: https://www.provenlocks.com/products/model-s175
- Proven home page (lifetime warranty, keyed alike, made in USA): https://www.provenlocks.com/
- AMPLock BRP-2: https://www.amplock.com/en-us/products/ball-coupler-lock-flat-lip-design
- AMPLock coupler collection (free US/Canada shipping, 30-day returns): https://www.amplock.com/en-us/collections/trailer-coupler-lock
- AMPLock warranty and key registration: https://www.amplock.com/en-us/pages/warranty
Checked 22 October 2026. Prices are list prices on the maker sites that day and change often.
Our pick
Proven Industries Model 2516: proven: 2-5/16 in trigger/thumb latch. Owners of valuable 2-5/16 in trailers stored unattended. If budget matters more, see the other picks above.
Check price at Proven ↗FAQs
- Is AMPLock or Proven more secure?
- Both are premium custom-fit designs with high-security cores. We have not tested them; choose the one made for your exact coupler.
- Which is cheaper?
- Entry models are similar: Proven S175 at $120 and AMPLock BRP-2 Strong at $129.99 (list, October 2026).
- Do both offer keyed-alike locks?
- Yes, both sell keyed-alike options across their ranges.