Hard folding
BAKFlip MX4 vs Extang Solid Fold ALX
Security, weather sealing, bed access, material, weight and warranty — side by side, then a straight verdict on who each one suits.
BAKFlip MX4
A matte-finish aluminium hard-folding cover that balances strong security, sealed weather protection and flexible bed access — the default recommendation for most trucks.
Best for: Best all-round hard cover
Extang Solid Fold ALX
A textured matte aluminium hard tri-fold that sits exceptionally low and flush, with quick-release clamps and integrated tension seals.
Best for: Low-profile hard fold
Side by side
Ratings are ours, on a three-point scale, and comparable across every cover in the database. Specs are as published by the manufacturer and vary by truck and bed length.
| BAKFlip MX4 | Extang Solid Fold ALX | |
|---|---|---|
| Security | High | High |
| Weather | High | High |
| Bed access | Medium | Medium |
| Type | Hard folding | Hard folding |
| Brand | BAK | Extang |
| Material | Matte aluminium panels | Textured aluminium panels |
| Weight | ~52 lb (5.5 ft) | ~50 lb (5.5 ft) |
| Warranty | 3-year | Limited lifetime |
| Install | Clamp-on, no drilling | Clamp-on, no drilling |
| Price | $$$ | $$$ |
What each one gets right and wrong
BAKFlip MX4
Strengths
- Excellent security and weather sealing
- Folds forward and locks upright
- Durable matte aluminium finish
Trade-offs
- Pricier than soft folders
- Heavier to remove fully
Extang Solid Fold ALX
Strengths
- Sleek low-profile stance
- Strong security and seals
- Lifetime warranty
Trade-offs
- Premium price
- Folds, not roll-back
The verdict
Pick the BAKFlip MX4 if…
Its balance of security, weather protection and access matches how you use the bed.
Best all-round hard cover
Pick the Extang Solid Fold ALX if…
Its balance of security, weather protection and access matches how you use the bed.
Low-profile hard fold
Both are sold per truck and bed length. Confirm fitment for your exact year and bed before ordering either — the comparison above is about the cover, not about whether it fits you.
Other comparisons
Still shortlisting? These involve one of the two covers above.
BAKFlip MX4 vs Extang Solid Fold ALX — frequently asked
BAKFlip MX4 or Extang Solid Fold ALX — which should I buy?
Buy the BAKFlip MX4 if its balance suits how you use the bed. Buy the Extang Solid Fold ALX if its balance suits you better. Both are the same type of cover, so the decision is about execution rather than category.
Is the BAKFlip MX4 more secure than the Extang Solid Fold ALX?
On our rating the BAKFlip MX4 scores High for security and the Extang Solid Fold ALX scores High. Treat that as resistance to an opportunist rather than as a safe — no tonneau cover stops someone determined with tools and time.
Will either of these fit my truck?
Both are sold per truck and bed length rather than as one universal part, so the answer depends on your year, model and bed. Most full-size & mid-size short/standard beds — sold per truck/bed, confirm your year. Check your exact fitment before ordering either.
Do either need drilling to install?
BAKFlip MX4: Clamp-on, no drilling. Extang Solid Fold ALX: Clamp-on, no drilling. Mainstream covers clamp to the bed rails and need no drilling, which keeps them removable and the truck's finish intact.