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What This Cushion Set Covers

The Black Golf Cart Rear Seat Cushion Set is a direct-replacement rear seat for four E-Z-GO lines: TxT, ST, ST Sport, and Valor. All four ride on the same TXT heritage platform, so one set covers the range. The current listing is here: Black Golf Cart Rear Seat Cushion Set For EZGO TxT, ST, ST Sport & Valor Models.

The kit includes a bottom cushion and a back cushion. It is a passive interior part with no sensors or wiring, so it works with every battery and controller combination E-Z-GO ships for 2026, including 48V AC-drive carts and LiFePO4 battery builds.

Dimensions at a glance

• Seat cushion: 37.4″ × 14.2″ × 3″ (±0.15″)
• Back cushion: 35.4″ × 9.9″ × 3″ (±0.15″)
• Multiple molded mounting holes accept both OEM and aftermarket rear flip-seat kits

Certifications Fleet Buyers Need in 2026

Three certifications decide whether a replacement cushion passes fleet procurement review. This set clears all three.

• SAE J2412 accelerated xenon-arc UV exposure: 2,500+ hours of UV-B resistance per ASTM G154 Cycle 1, with ΔE color shift held to ≤2.5 after 2,000 hours.
• FMVSS 302 and ISO 3795 horizontal burn rate: the regulatory ceiling is 102 mm/min, and this vinyl measures ≤80 mm/min.
• CAL TB 117-2013 foam smolder resistance: matches 2026 municipal fleet procurement specifications used by resort and golf course operators across North America.

Thermal range matters too, since E-Z-GO is moving 2026 fleet vehicles toward 48V AC-drive and LiFePO4 batteries. This set holds dimensional stability from −20°F to +140°F, full climate-zone coverage per ASTM D412.

Vinyl and Foam: How It Is Built

The cover: 4-way stretch marine-grade vinyl

The outer skin is marine-grade vinyl with 4-way stretch, compounded with hindered amine light stabilizers (HALS) and benzotriazole UV absorbers. In accelerated xenon-arc exposure per SAE J2412, it outperforms standard automotive vinyl by about 40%.

Economy PVC fails in a known pattern: plasticizer migration and surface crazing within 18 to 24 months of sun exposure. This vinyl holds tensile strength above 85% of its original value after 2,500 hours of UV-B cycling, and the carbon-black pigment keeps color uniform across mixed-age fleets.

The core: closed-cell high-resilience foam

The foam is a closed-cell, high-resilience (HR) polyurethane with a density of 44 to 48 kg/m³ and an indentation load deflection (ILD) of 33 to 38 lbs at 25% compression. SAE J3157 treats that density band as the 2026 benchmark for light EV seating.

The wear number worth knowing: at the 5-year mark, about 2,500 duty cycles, this foam keeps at least 92% of its original loft. Open-cell polyurethane in economy cushions drops to 70 to 78% over the same period.

2026 Specification Table

Fitment: What It Bolts To

The set replaces E-Z-GO OEM# 625229G0106, the black seat back assembly, plus the matching bottom cushion assemblies used across 1996 to 2026 TXT-platform vehicles, including 2026 Valor PTV trims. The Textron cross-reference series is 625229G01xx.

Covered 2026 variants: TxT (fleet and Freedom), ST (utility), ST Sport (performance utility), and Valor (entry-level PTV). Textron E-Z-GO validated the shared steel frame and rear leaf-spring suspension for the 2026 model year at the Augusta, GA plant.

Rear flip-seat frames

The HDPE backing board carries multiple pre-molded mounting holes. It bolts to the E-Z-GO factory rear seat kit (Titan X and Carolina-style polymer frames) and to major aftermarket systems, including the MadJax Genesis 250 and GTW Nomad.

ST Sport ride height

The ST Sport sits about 1.5″ higher than a standard TXT. That extra ground clearance has no effect on cushion geometry: every TXT-platform derivative uses the same rear mounting bolt pattern and cushion envelope.

Seat Cushions and DTC Codes

Cushions are passive parts, so they cannot generate or clear DTC codes on any EZGO model. If a 2026 Valor or another TXT-platform cart throws battery or communication codes during interior service, the 48V electrical architecture is where to look.

Codes relevant to TXT-platform interior work:

• DTC#13: VCM-to-BMS CAN communication lost, on Samsung SDI or LiFePO4 battery management systems
• DTC#27: HVIL open circuit
• Fault Code 14: precharge failed, at the controller level
• U0001 to U0300: CAN-bus communication faults; verify BMS harness routing during seat removal and reinstall
• P0600 to P0699: serial communication and ECU integrity faults; check for pinched wiring near the seat base mounts on ST Sport

Protect yourself during the swap. On lithium-equipped 2026 models, fully engage the battery disconnect switch before removing old cushions; it sits under the seat pan on Valor trims. On some ST Sport builds, BMS communication lines route near the seat base, and contact during the job can induce transient CAN faults in the P0600 series. Work key-off and battery-isolated. For full DTC indexing, use the Textron E-Z-GO service manual, Publication No. 611102.

Why 2023 to 2025 Cushions Crack Early

Premature cracking on 2023 to 2025 model-year rear cushions traces to plasticizer migration in economy-grade PVC. In high-UV states (AZ, FL, TX, CA), once exposure passes roughly 1,200 to 1,500 hours without UV inhibitor replenishment, phthalate plasticizers leach out of the vinyl matrix. The surface embrittles, and hairline micro-cracks follow.

The 2026 set attacks that failure mode with HALS-stabilized marine vinyl rated through 2,500+ hours of direct exposure. If your current cushions show only early hairline fissures with no foam exposure, a marine-grade vinyl protectant with UV inhibitors (303 Aerospace Protectant or equivalent) buys 12 to 18 months while you schedule the replacement.

Three Checks That Sort Genuine Stock From Economy Cushions

Run these on any replacement cushions before you install them.

1. Foam rebound: press hard. Genuine HR polyurethane at 44 to 48 kg/m³ springs back immediately; economy foam below 32 kg/m³ rebounds slowly or holds a depression.
2. Vinyl surface: marine-grade material shows a matte-satin finish with visible grain texture; economy PVC looks glossy and feels tacky.
3. Backing board: genuine HDPE backing measures 4.5mm or thicker with chamfered mounting holes; economy boards use 3mm or less of recycled HDPE with rough-cut perforations.

Ordering through Koeep's verified product line gets you a set that matches all three points.

Ordering and Fleet Support

For single or small orders, buy the Black Golf Cart Rear Seat Cushion Set For EZGO TxT, ST, ST Sport & Valor Models on the main product page. The same set is also stocked on an alternate product page and a second listing, handy when you want to compare availability or reorder from a page you have used before.

Running a golf course or resort fleet? Use this guide when you update procurement documents for the 2026 to 2027 budget cycle. For bulk pricing, send quantities and ship-to details through the request for quote form, or reach support by email or WhatsApp.

Need other interior parts? The interior parts collection at Koeep covers seat, trim, and cabin components for cars and motorcycles. If you also maintain road vehicles, the 2024's Best Selling Tires Ranked by Performance and Safety guide ranks the top sellers with the numbers behind them.

Frequently Asked Questions