139T 1-1/8″ Rear Drive Belt 40024-04 1204-0063 for Harley Davidson Touring Motorcycle Electra Glide FLHT FLTR

Product Specifications

Compatible Models

Tired of Belt Failure on Your Harley Touring Bike? Get the Right 139T Rear Drive Belt for FLHT, FLTR, and Road King Models

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.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

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.

Where This Part Works

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.

Engineering Details That Matter

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.

The Real Cost of Wrong Parts

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.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in rigid retail box with molded foam cradle to prevent edge deformation during transit
• In-stock items ship within 2–5 working days after order confirmation
• Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight based on order volume and destination
• Real-time tracking number provided upon dispatch, updated until delivery
• MOQ is 1 piece — supports urgent shop repairs and single-bike fleet maintenance

Get Your 139T Rear Drive Belt Now

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.

Frequently Asked Questions