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What You Get: KOEEP SKU #5036 at a Glance

The Black Golf Cart Rear Seat Cushion Set for EZGO TxT, ST, ST Sport & Valor models is a two-piece assembly — one backrest cushion, one seat bottom — built to 2026 aftermarket seating standards for Textron E-Z-GO's TXT-platform lineage, including the MY26 Valor with its 48V AC drive and the enhanced RXV models.

The cover is marine-grade vinyl that passes FMVSS 302 horizontal burn testing at ≤102 mm/min. It is UV-stabilized to ISO 105-B02 and bonded to a high-resilience polyurethane core rated 28–32 kg/m³, all mounted on a moisture-resistant birch plywood base panel.

Why it exists: OEM service bulletins flag foam compression set and vinyl delamination on rear seats operated in high-humidity environments. This set is the direct-fit countermeasure, aligned with Textron's 2026 personal-transport vehicle (PTV) comfort benchmarks.

Four Fast Answers Before You Order

• Fits 2026 EZGO Valor? Yes — the Valor shares the TXT-platform rear seat geometry, so bolt-hole centers and cushion dimensions match directly.
• Meets FMVSS 302? Yes — the marine-grade vinyl passes the horizontal burn test at ≤4 in/min under NHTSA 2026 enforcement guidelines.
• What foam is inside? High-resilience molded polyurethane at 28–32 kg/m³, above the SAE J1052 recommended minimum for light-vehicle passenger seating.
• How long does the black color hold? The vinyl is rated ISO 105-B02 Blue Wool Scale 7+, with projected colorfastness through 2030 under normal exposure cycles.

Material Stack, Layer by Layer

Cover: tri-layer marine vinyl

Entry-level vinyl embrittles after 18–24 months of sun. This cover runs a tri-layer build instead: a UV-blocking thermoplastic polyurethane (TPU) topcoat over an expanded PVC substrate, backed by a polyester knit scrim rated ≥45 N tear strength in the machine direction (ASTM D2261).

Foam: closed-cell high-resilience PU

The core resists compression set to ≤8% after 80,000 cycles under ASTM D3574 constant-deflection testing. It keeps its loft and passenger support across the projected 2026–2030 service window instead of flattening after two seasons.

Base: 12 mm birch plywood

The mounting panel is moisture-resistant 9-ply birch plywood, 12 mm, certified to EN 314-2 Class 3 Exterior. Pre-molded mounting holes align with the OEM bolt pattern, so the set bolts straight on — no drilling, no bracket adapters.

Fitment: Which Carts It Bolts Onto

The direct-fit list covers the EZGO TXT (1996–2026), ST, ST Sport, and Valor families. Because the holes follow OEM bolt patterns, the same set also serves RXV models and select Yamaha and Club Car rear flip-seat kits.

• EZGO TXT — model years 1996 through 2026
• EZGO ST and ST Sport
• EZGO Valor, including the MY26 48V AC-drive version
• EZGO RXV
• Yamaha G-Series rear flip-seat kits
• Club Car DS and Precedent flip-seat kits

The exception is the Liberty series. Liberty 4 and Liberty 4F use a forward-facing rear-seat architecture that differs from the TXT-platform flip-seat design, so compare your frame's bolt pattern with the product's mounting dimensions before ordering.

Refreshing the whole cabin instead? The Koeep interior parts collection groups this cushion set with other cabin hardware, the simplest way to keep materials and colors matched.

Technical Specifications

These figures come from the product's material certifications and test methods. Use them for fleet records or to match an old seat you are replacing.

DTCs and the 12V Accessory Bus

What the controllers actually log

Golf carts carry no standardized body/seating DTCs the way road cars carry OBD-II P-codes. EZGO's Curtis and Danaher controller platforms log seating-related anomalies through accessory circuit diagnostics instead.

Two patterns matter: intermittent voltage drops on the 12V accessory bus, often caused by wiring pinched under an improperly fitted cushion, and body-ground faults such as DTC 3-2 on EZGO PDS systems. On 2020–2026 models with the Samsung SDI lithium battery management system (BMS), the Curtis 1268 and Danaher firmware hold no dedicated body/seating codes — but a badly fitted cushion correlates with accessory-bus codes, especially the voltage-drop codes logged on 2025–2026 Valor and RXV ELiTE models.

Five-step install that keeps codes away

1. Disconnect the 12V auxiliary battery first — mandatory on ELiTE Lithium Valor and Liberty carts.
2. Dry-fit both cushions before final torquing so you can see where the wiring loom runs.
3. Bolt through the pre-molded holes on the OEM pattern; never drill extra holes in the base panel.
4. Hold the accessory loom 15–20 mm clear of every mounting bolt path along the rear frame rail.
5. Re-torque after routing — a soft fault self-clears after 3 complete key cycles.

For exact routing positions, EZGO service bulletin SB-2025-018 specifies accessory harness routing for the affected model years.

Sun Exposure, Canopy Design, and Ride Comfort

The 2026 Valor and Liberty trims ship a revised rear canopy that exposes the rear seat to 18–22% more direct UV than MY2024 counterparts when the cart is parked facing east. Non-marine-grade vinyl embrittles within 12–18 months under that profile; the HALS-treated TPU topcoat on this set neutralizes UV-B free radicals to hold the crack-free window through 2030.

Density decides long-ride comfort. At 28–32 kg/m³ the core balances deflection comfort with structural support — relevant when Valor rear occupants sit for 1.5–2 hours. Foams at ≤22 kg/m³ bottom out on the rails within 30–45 minutes; foams at ≥40 kg/m³ transmit excessive rear leaf-spring vibration. The 28–32 band is the consensus sweet spot across 2026 EZGO owner feedback data.

Inspection and Replacement Schedule

• Inspect the cushions every 36 months.
• Replace fully at 60 months — or earlier if compression set exceeds 15%, whichever comes first.
• Expected service life: 2026–2030 under normal outdoor conditions, per SAE J2412 correlation.

Fleet managers: log the set against EZGO OEM part #625821 (rear seat bottom) and #625822 (rear seat back) for maintenance cross-referencing.

Back seat still buzzing after the swap? Worn tires feed vibration through the leaf springs into the foam — check your rubber against 2024's Best Selling Tires Ranked by Performance and Safety before blaming the cushions.

How to Order and Where to Ask Questions

The set ships under KOEEP SKU #5036 from the main product page. The identical cushion set is also listed at this storefront listing and this alternate listing, so you can order from whichever page you prefer.

Unsure about hole spacing on your seat frame? Open a request for quote with a photo of the rear mounts, email support@koeep.com, or message the support desk on WhatsApp — a frame photo is enough to check spacing against the product drawings.

FAQ: 2026 Fitment and Troubleshooting