• BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500 - Stateside Performance - Tonneau Covers - Hard Fold - BAK - BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500
  • BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500 - Stateside Performance - Tonneau Covers - Hard Fold - BAK - BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500
  • BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500 - Stateside Performance - Tonneau Covers - Hard Fold - BAK - BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500
  • BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500 - Stateside Performance - Tonneau Covers - Hard Fold - BAK - BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500
  • BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500 - Stateside Performance - Tonneau Covers - Hard Fold - BAK - BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500
  • BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500 - Stateside Performance - Tonneau Covers - Hard Fold - BAK - BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500
  • BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500 - Stateside Performance - Tonneau Covers - Hard Fold - BAK - BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500
  • BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500 - Stateside Performance - Tonneau Covers - Hard Fold - BAK - BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500
  • BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500 - Stateside Performance - Tonneau Covers - Hard Fold - BAK - BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500
  • BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500 - Stateside Performance - Tonneau Covers - Hard Fold - BAK - BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2025 GMC Sierra 1500
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BAK449130TS

BAK

BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2026 GMC Sierra 1500

BAK BAKFlip MX4 TS Hard Folding Bed Cover - 5 ft 10 in Bed | 2019-2026 GMC Sierra 1500

$1,449.99 USD
$1,449.99 USD
Sale Sold out
Shipping calculated at checkout.

In stock

The BAK BAKFlip MX4 TS fits the 2019-2026 GMC Sierra 1500 5ft 10in bed and adds integrated T-slot channels for racks and crossbars. Heavy-duty aluminum panels support over 400lbs of evenly distributed weight.

Install Difficulty: DIY Possible
Clamps to factory bed rails with included hardware; typically installs in 30-45 minutes. Minimal drilling may be required on select applications for the drainage tubes.

Product Overview

The BAKFlip MX4 TS is a hard-folding tonneau built with heavy-duty aluminum top panels on precision-engineered rails. A matte black automotive coating resists dents, scratches, and UV fading.

Integrated T-slot channels in the bed rails accept aftermarket crossbars, racks, and cargo carriers. The panels fold forward to the cab and lock in place with prop rods for full bed access without blocking the third brake light.

Does not fit trucks with the Carbon Pro bed.

Features & Specifications

  • Fits: 2019-2026 GMC Sierra 1500
  • Will not fit Carbon Pro model. Works with and without MultiPro (GMC) or MultiFlex (Chevy) tailgate
  • Fits 5ft 10in bed with standard body only -- does not fit Carbon Pro bed
  • 5ft 10in bed length fitment
  • Heavy-duty aluminum top panels rated over 400lbs
  • Matte black automotive coating, scratch and UV resistant
  • Integrated T-slot channels for racks and crossbars
  • Integrated drainage tubes route water out of the bed
  • Folds forward without blocking the third brake light
  • Prop rods with rubber bumpers secure open position
  • Bed stake pockets left open for accessories
  • Limited 5-year warranty

Fitment

This part fits the following vehicles:

Year Make Model Submodel
2019-2025 GMC Sierra 1500 AT4
2022-2025 GMC Sierra 1500 AT4X
2019-2021 GMC Sierra 1500 Base
2019-2025 GMC Sierra 1500 Denali
2022-2025 GMC Sierra 1500 Denali Ultimate
2019-2025 GMC Sierra 1500 Elevation
2022-2025 GMC Sierra 1500 Pro
2019-2025 GMC Sierra 1500 SLE
2019-2025 GMC Sierra 1500 SLT
2026 GMC Sierra 1500 All
⚠ Submodel Fitment: If your submodel is not listed in the fitment table above, we cannot confirm fitment. Please contact us before purchasing to verify.

Shipping & Returns

Tracking is typically provided within 3–5 business days; items shipping direct from the manufacturer may take 5–7. Some items are made to order or may be backordered. Questions about stock? Reach us through live chat or email.

Warranty

All warranties are through the manufacturer and are facilitated by Stateside Performance. Some manufacturers require the end user to contact them directly; in that case we will point you to the right contact. Email us with any warranty questions.

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  • Free shipping over $250

    Free shipping applies to items that are shipped via ground through UPS or FedEx and are over $250 going to the continental 48 states. This does not apply to Alaska or Hawaii, and does not apply to any item(s) that are shipped via freight or with any other option other than ground shipping.

    Shipping policy 

  • 30-day returns

    Returns must be requested within 30 days of delivery. Parts must be new, unused, uninstalled, and in original packaging, with an RMA. Some items are final sale.

    Return policy