<p>Stop worrying about unexpected breakdowns or OEM delays — this <strong>139T 1-1/8" rear drive belt</strong> delivers OEM-replacement reliability with same-day dispatch from our Guangzhou warehouse. Built to exact Harley touring specifications, it eliminates the guesswork and downtime caused by mismatched or counterfeit belts.</p> <ul> <li>Fits 2004–2006 FLHT, FLTR, FLHR, FLHRC, FLHX, and FLHTCU models — including critical EFI variants where tooth timing sync is non-negotiable</li> <li>True 139T pitch count + precisely tensioned 28.5mm width — not stretched or undersized like budget imports</li> <li>Replaces part numbers 40024-04, 1204-0063, 58-439 (and all common variants) — verified against factory service manuals</li> <li>MOQ 1 piece, shipped in 2–5 working days — no minimum order traps or 4-week waits</li> </ul>
| Parameter | Details |
|---|---|
| Part Name | Rear Drive Belt |
| Part Number (OEM Reference) | 40024-04, 1204-0063, 4002404, 12040063, 58-439, 58439 |
| Brand Compatibility | Harley-Davidson |
| Machine Model Fitment | FLHR, FLHRC, FLHRCI, FLHRI, FLHRS, FLHRSI, FLHT, FLHTI, FLHX, FLHXI, FLTRI, FLHTC, FLHTCI, FLHTCSE2, FLHTCUI, FLHTCUSE (2004–2006) |
| Width | 1-1/8" / 28.5 mm |
| Teeth Count | 139T |
| Condition | New Aftermarket |
| Warranty | 6-month warranty against manufacturing defects |
| Packaging | Original sealed retail box with protective foam |
| Brand | Applicable Models |
|---|---|
| Harley-Davidson | FLHR Road King (2004–2006), FLHRC Road King Classic (2004), FLHRCI EFI Road King Classic (2004–2006), FLHRI EFI Road King (2004–2006), FLHRS Road King Custom (2004–2006), FLHRSI EFI Road King Custom (2004–2006), FLHT Electra Glide (2004–2005), FLHTI EFI Electra Glide (2004–2006), FLHX Street Glide (2006), FLHXI EFI Street Glide (2006), FLTRI EFI Road Glide (2004–2006), FLHTC Electra Glide Classic (2004–2005), FLHTCI EFI Electra Glide Classic (2004–2006), FLHTCSE2 EFI Electra Glide Screamin Eagle (2005), FLHTCUI EFI Electra Glide Ultra Classic (2004–2006), FLHTCUSE Electra Glide Ultra Classic Screamin Eagle (2006) |
Motorcycle repair shops and fleet managers report that incorrect or low-grade drive belts cause sudden drivetrain failure during long-haul rides — leading to roadside breakdowns, customer dissatisfaction, and lost service revenue. OEM replacement belts often take 3–4 weeks to arrive, while counterfeit versions wear out in under 5,000 miles. With no universal cross-reference database, mismatched tooth count or width leads to slippage, noise, and premature sprocket damage.
This 139T 1-1/8" rear drive belt meets OEM dimensional and tensile specifications for Harley-Davidson touring models. Built by an ISO 9001-certified manufacturer, each belt undergoes static tension testing and tooth profile verification before shipment. Designed for high-torque highway cruising and stop-start city operation, it delivers consistent power transfer without stretch or slip — critical for FLHT, FLTR, and Road King applications where reliability directly impacts rider safety and service uptime.
This drive belt is engineered for sustained use across varied road conditions: interstate highways, mountain passes, urban traffic, and extended tour routes. It operates under continuous thermal cycling (60°C–120°C surface temperature) and transmits up to 110 N·m torque from primary drive to rear wheel. In motorcycle maintenance workshops and dealer service centers, correct belt selection prevents misalignment-induced bearing wear, reduces vibration feedback, and extends final drive service intervals — making it essential for any harley touring rear drive belt replacement program.
The belt uses high-modulus aramid tensile cords embedded in heat-resistant EPDM rubber compound — resisting ozone cracking and thermal degradation better than standard neoprene. Its precisely molded 139T tooth geometry ensures full engagement with OEM sprockets, eliminating skip under load. The 28.5 mm width matches original equipment tolerances within ±0.15 mm, preventing lateral migration and edge wear. Surface hardness (Shore A 65±3) balances flexibility for smooth engagement with rigidity for torque transmission — verified via durometer sampling per batch. Each belt carries a laser-etched production lot code traceable to raw material batches and curing cycle logs.
A substandard 139T rear drive belt may cost 20% less upfront but fails 1.5× faster — causing unplanned labor, tow fees, and customer goodwill loss. Industry data shows improper belt tension or tooth mismatch increases final drive bearing failure rate by 47%. Using non-OEM-equivalent parts voids OEM service recommendations and violates ISO 10816-3 vibration standards for driveline components. Total cost of ownership (TCO) includes not just unit price, but downtime, repeat labor, and warranty exposure — which our verified harley rear drive belt eliminates through pre-shipment performance validation and 6-month manufacturing defect coverage.
We only source from ISO 9001-certified factories with documented process controls for rubber compounding and belt vulcanization. Every incoming coil undergoes dimensional inspection and tensile strength testing per ASTM D412. Before dispatch, 100% of belts are subjected to dynamic load simulation at 1.2× rated torque. We offer 6-month warranty covering replacement and return shipping for confirmed manufacturing defects. With 10 years exporting to 120+ countries, our team has verified over 25,000 motorcycle part cross-references. Our technical staff — all with minimum 5 years field service experience — respond to part-match requests within 2 hours. Over 8,000 motorcycle-specific SKUs are held in stock at our Guangzhou warehouse for same-day picking.
Your motorcycle isn’t generating revenue while it’s idle. Every hour of delay adds to labor cost, rental loss, or customer complaint risk. Send us your bike model (e.g., FLHTI 2005), quantity needed, and destination — we’ll email a formal quote within 24 hours. First-time buyers may request one sample for physical fit and tension verification before bulk order.
Q: Is this an original Harley-Davidson part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket part manufactured by an ISO 9001-certified supplier to match OEM specifications for dimensions, material composition, and performance.
Q: How do I confirm this 139T rear drive belt fits my specific Harley model and year?
A: Provide your exact model designation and year (e.g., FLHTCUI 2006) — our technical team will verify compatibility and cross-reference OEM part numbers within 2 hours.
Q: What is the warranty period for this drive belt?
A: 6 months from date of delivery against manufacturing defects, including free replacement and return shipping if failure is confirmed as material or workmanship related.
Q: What is the minimum order quantity?
A: 1 piece — designed for urgent repair needs and small-volume shops.
Q: How soon can I receive the belt after placing an order?
A: In-stock items ship within 2–5 working days. Express courier delivery takes 3–7 business days depending on destination.
Q: Can I request a sample before placing a bulk order?
A: Yes — first-time customers may request one sample for physical evaluation and installation testing.
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WhatsApp: +86 187 2205 7128 | Email: talos@xunpojx.com
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