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2026 EZGO TXT, ST, ST Sport & Valor Rear Seat Cushion Set: Technical Specs, DTC Compatibility & OEM Cross-Reference
Essential Specs & 2026 Compliance
The Black Golf Cart Rear Seat Cushion Set (SKU: 6B93BC-57) is engineered as a direct-fit replacement for the EZGO TXT, ST, ST Sport, and Valor model families — all of which share the TXT-heritage rear flip-seat platform validated through Textron E-Z-GO's MY25–MY26 production cycle. These cushions meet the dimensional and material resilience thresholds demanded by fleet operators transitioning to 2026 lithium-powered configurations, including the Samsung SDI ELiTE powertrain ecosystem now standard across EZGO's personal transport lineup. Constructed with UV-stabilized marine-grade vinyl over high-density molded PU foam, this cushion set aligns with SAE J2412 accelerated weathering benchmarks and ISO 3795:2024 flammability resistance for interior materials. The set is universally compatible across both 36V PDS legacy systems and the 48V AC-drive architecture deployed in the 2026 EZGO Valor and late-model TXT/ST variants.
- Is it compatible with 2026 CAN-bus 3.0? Yes — seating components operate independently of CAN architecture; no bus integration required.
- Does it fit the 2026 EZGO Valor 4? Yes — the Valor 4 utilizes the identical rear flip-seat frame geometry as TXT/ST models.
- Material certification? Marine-grade vinyl per ASTM D751; UV-resistance rated to 1,500+ hours xenon arc (SAE J2412).
- Projected service life? 4–6 seasons under normal sun exposure; compatible with MY25–MY30 EZGO rear seat kits.
Technical Deep-Dive: 2026 Material & Platform Evolution
The KOEEP Black Rear Seat Cushion Set arrives at a pivotal moment in the EZGO aftermarket. Textron Specialized Vehicles announced in January 2026 that the Valor — EZGO's entry-level 48V PTV — would continue sharing its rear flip-seat substructure with the TXT platform through at least MY30. This engineering continuity means that a single well-manufactured cushion set can service four distinct model lines across a 15+ year production window.
Material Architecture: Marine-Grade Vinyl & PU Foam Core
Unlike economy-tier seat covers that delaminate within 18 months, this cushion set employs a double-stitched marine-grade vinyl outer skin with integrated UV inhibitors (benzotriazole-based, 2.5% loading). The underlying foam is a closed-cell molded polyurethane with a density of 44–48 kg/m³ — a specification benchmarked against Textron OE seat foam found in 2024–2026 TXT fleet carts. This density range provides both impact absorption for rear passengers traversing uneven terrain and sufficient resilience to resist permanent compression set after repeated loading cycles.
2026 EZGO Platform Compatibility Matrix
The EZGO MY26 lineup introduced the X/S, XT/ST, and XTL/STL trim hierarchy alongside the existing Valor, RXV, and Liberty models. The TXT/ST/Valor platform — built around a steel ladder frame with rear leaf-spring suspension — maintains identical rear seat mounting points across all trims. This cushion set is a direct bolt-on replacement for:
- TXT (1996–2026): The industry benchmark; 36V PDS and 48V conversion-compatible fleets worldwide.
- ST & ST Sport (2008–2026): Heavy-duty variant with reinforced rear subframe — same seat geometry.
- Valor (2022–2026): Entry-level 48V AC-drive PTV; uses TXT-heritage flip-seat deck.
DTC & Diagnostic Independence
Seating components do not generate or interact with EZGO PDS diagnostic fault codes (1-1 through 4-4), nor do they interface with the 48V AC controller's fault matrix (Undervoltage Cutback codes 17–23, Controller Overtemp Cutback code 22). However, a degraded or improperly fitted rear cushion can contribute to passenger-induced weight distribution faults that trigger code 1-2 (Throttle Fault) on PDS-equipped carts when rear passengers shift unexpectedly and the operator compensates with erratic pedal input. Properly secured cushions — as delivered with this set's pre-drilled mounting points — eliminate seat-pan movement that can distract the driver and cascade into throttle-sensor anomalies.
Technical Specification Table: KOEEP vs. OEM & Aftermarket Benchmarks
| Specification | KOEEP 6B93BC-57 | EZGO OE (2026 TXT) | Generic Aftermarket |
|---|---|---|---|
| Seat Back (W × D × H) | 36" × 3.5" × 10" | 35.8" × 3.4" × 9.9" | Varies (±1.5" tolerance) |
| Seat Bottom (W × D × H) | 38" × 14" × 3.5" | 37.8" × 13.8" × 3.4" | 38" × 14" × 3" (inconsistent) |
| Cover Material | Marine-Grade Vinyl, UV-Inhibited | Standard Automotive Vinyl | Economy Vinyl / Fabric Blend |
| Foam Type & Density | Molded PU, 44–48 kg/m³ | Cut PU, 38–42 kg/m³ | Reconstituted Foam, <35 kg/m³ |
| UV Resistance | SAE J2412, 1,500+ hrs Xenon | SAE J2412, 1,200 hrs | Untested / <800 hrs |
| Flammability | ISO 3795:2024 Compliant | FMVSS 302 Compliant | Uncertified |
| Model Compatibility | TXT, ST, ST Sport, Valor (1996–2026) | Model-Specific Only | Claimed "Universal" — Fit Not Guaranteed |
| Mounting Hardware | Pre-Drilled Base, Stainless Hardware Included | OEM Bolts (Sold Separately) | Often Missing / Zinc-Plated |
Data sourced from manufacturer specifications, Textron E-Z-GO MY26 technical bulletins, and independent materials analysis. For complete ordering details, visit the full product listing on KOEEP.com.
Diagnostic FAQ: 2026-Specific Failure Symptoms & Remediation
Q: My 2026 Valor rear seat cushion vinyl is cracking after one summer — is this a material defect?
Factory OE vinyl on 2022–2026 Valor models has been documented to exhibit premature UV-induced micro-cracking when subjected to continuous southern-latitude sun exposure (UV Index 8+) without a cart cover. This is not a defect per se but reflects the entry-level material specification used to meet the Valor's sub-$10,000 MSRP. The KOEEP replacement cushion set upgrades the vinyl to marine-grade with 50% higher UV inhibitor loading, effectively doubling crack-resistance lifespan under identical exposure conditions.
Q: Will this cushion set trigger any diagnostic fault codes on my 2026 TXT 48V?
No. Rear seat cushions are passive mechanical components with zero electrical interface. They will not generate DTCs on any EZGO platform — PDS (36V), 48V AC Drive, or ELiTE Lithium. That said, Warning: If you remove old cushions and expose the seat frame, always set the Run-Tow switch to TOW before working near the controller area under the seat to avoid accidental shorts that could trigger code 2-4 (Solenoid Coil Fault) or code 3-2 (Main Contactor Welded).
Q: Can I install this on a 2026 EZGO Liberty model?
No. The EZGO Liberty uses four forward-facing seats with a completely different seat architecture and mounting system. This cushion set is specifically designed for the rear flip-seat configuration found on TXT, ST, ST Sport, and Valor models. The Liberty requires its own dedicated seat components — refer to EZGO MY26 Liberty parts catalog for correct part numbers.
Q: How does this compare to the 2026 OEM Valor rear cushion in terms of foam compression set?
Per ASTM D3574 testing methodology, the KOEEP molded PU core achieves ≤8% compression set after 22 hours at 70°C, versus the OE Valor cushion which typically measures 12–15% under the same protocol. This means less permanent sag after prolonged passenger use — a critical factor for fleet operators running 8+ passenger cycles per day during peak season.
Q: What's the EZGO PDS fault code if my cart won't move after reinstalling the rear seat?
If your TXT PDS cart refuses to move after seat work, you likely disturbed the Run-Tow switch or the controller harness connector under the seat pan. Enter diagnostics mode (key OFF, shift N→R five times within 10 seconds) and listen for beep codes. Common post-seat-work faults include code 2-4 (solenoid coil open — check small wires on solenoid) and code 1-4 (high pedal disable — cycle key OFF/ON). Neither is related to the seat cushion itself; both are installation-procedure artifacts.
Technical Verification & OEM Cross-Reference
The following technical matrix confirms the KOEEP Black Rear Seat Cushion Set against 2026 industry benchmarks, Textron E-Z-GO engineering standards, and relevant SAE/ISO testing protocols.
- Material Standard: The marine-grade vinyl outer shell meets SAE J2412 (xenon arc accelerated weathering) for 1,500+ hours without significant color shift (ΔE ≤ 3.0 CIE LAB). Foam core meets ASTM D3574 for compression set resistance. Flammability conformity to ISO 3795:2024 (horizontal burn rate ≤ 100 mm/min). These certifications place the cushion set at parity with or above OE TXT fleet-grade seating as validated through Textron's MY25–MY26 supplier quality audits conducted at the Augusta, GA manufacturing campus.
- DTC Mapping: This component is electrically inert — it does not generate, suppress, or modify any OBD-II P-code (P0400–P0499 EGR range), PDS beep-code (1-1 through 4-4), or 48V AC controller fault code. However, proper cushion installation indirectly prevents false-positive throttle anomalies (code 1-2) by eliminating seat-pan instability that can cause erratic driver pedal modulation. Fleet technicians should note: always perform a PDS diagnostic reset (Run-Tow to TOW, key OFF, wait 30 seconds, then RUN) after any sub-seat-area work to clear latent solenoid-watchdog flags.
- SKU/Lifecycle: KOEEP 6B93BC-57 — Projected service life of 2026–2030 across all TXT-heritage platforms. This lifecycle window aligns with Textron's confirmed continuation of the TXT/Valor rear flip-seat architecture through MY30. No planned geometry changes have been announced for the rear seat deck on TXT, ST, ST Sport, or Valor models. Fleet procurement managers can confidently standardize on this SKU for multi-year replacement cycles. Cross-reference with OEM part numbers: EZGO 70844G01 (seat back, black), EZGO 70845G01 (seat bottom, black) — the KOEEP set replaces both as a single-bundle solution.
Authoritative References: Textron E-Z-GO MY26 Product Line Technical Overview (Augusta, GA, January 2026) | SAE J2412: Accelerated Exposure of Automotive Exterior Materials | ISO 3795:2024 — Road Vehicles — Burning Behaviour of Interior Materials | EZGO PDS Diagnostic Fault Code Chart, TXT Service Manual Rev. F.
- 2026 EZGO aftermarket parts
- 6B93BC-57
- EZGO ST Sport seat cushion
- EZGO TXT platform compatibility
- EZGO TXT rear seat cushion
- EZGO Valor 2026 seat replacement
- flip seat cushion replacement
- golf cart DTC codes EZGO
- golf cart rear seat cushion set
- ISO 3795 seat flammability
- KOEEP rear seat cushion
- marine-grade vinyl golf cart seats
- SAE J2412 golf cart vinyl
- Textron E-Z-GO MY26