STG93843 Starter Motor 8R9-81890-00 B3J-81890-00 Fits Yamaha YZ450F WR450F YZ450FX Dirt Bike-Products-TIANGUAN-Page 1

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STG93843 Starter Motor 8R9-81890-00 B3J-81890-00 Fits Yamaha YZ450F WR450F YZ450FX Dirt Bike

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PRODUCT DETAILS

Starter Motor 8R9-81890-00 / B3J-81890-00 – Replacement for Yamaha WR450F / YZ450F / YZ450FX

The Starter Motor 8R9-81890-00 / B3J-81890-00 is a premium aftermarket replacement designed to meet OEM specifications for Yamaha WR450F, YZ450F, and YZ450FX motorcycles. With durable construction, strong cranking power, and precise fitment, it ensures reliable starting performance for off-road, motocross, and trail motorcycles. Perfect for replacing worn or weak OEM starters.

Product Specifications

Item	Specification
Product Type	Starter Motor
Voltage / Power	12V
Replacement Part Numbers	8R9-81890-00, B3J-81890-00
Condition	Aftermarket Replacement
Compatibility	Yamaha WR450F, YZ450F, YZ450FX (2019–2023)
Fitment Type	Direct OEM Replacement
Application	Off-Road, Motocross, Trail Bikes
Weight	1.2 KG

Fitment Details

Model	Year / Variant
Yamaha WR450F	2019 WR450FK, 2020 WR450FL, 2021 WR450FM (BDB2), 2022 WR450FN (BDB6), 2023 WR450FP (BDBA)
Yamaha YZ450FX	2019 YZ450FXK, 2020 YZ450FXL1, 2021 YZ450FXM (BEX1), 2022 YZ450FXN (BEX5), 2023 YZ450FXP (BEX9)
Yamaha YZ450F / Monster Edition	2020 YZ450FLGY / YZ450FLL, 2021 YZ450FMME (B2W9), 2021 YZ450FML (B2W5), 2022 YZ450FNL (B2WC), 2022 YZ450FNME (B2WG)

Packing Information

Item	Value
Net Weight (NW)	1.2 KG
Gross Weight (GW)	1.5 KG
Carton Size	20 × 15 × 12 CM

PRODUCT HIGHLIGHTS

Product Highlights

Feature 1	Feature 2	Feature 3
Direct OEM Replacement	Strong Cranking Power	Reliable Starting Performance
Durable Construction	Precision Fitment	Long Service Life
Suitable for Motocross & Trail Riding	Easy Installation	100% Tested Before Shipment

SHIPPING

Item Details

Processing Time Orders are processed within 1-3 business days after payment confirmation

Shipping Methods DHL/UPS/ FedEx/ TNT/ Air Freight/ Sea Freight

Estimated Delivery Time Express shipping: 3-7 business days, depending on destination

Packaging Export-standard cartons with protective inner packing

Tracking Tracking number will be provided once the order is shipped

Shipping Cost Calculated based on weight, dimensions, and destination

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WARRANTY POLICY

All new aftermarket parts come with a 1-Year warranty. Quality is the first thing we consider. Check out our Warranty Assistance for more details.

SHIPPING POLICY

We offer express and standard shipping options to ensure your off-road machine gets back in action—fast and reliably. For more details, please visit our Shipping Policy .

EASY RETURN POLICY

We prioritize your satisfaction. If your order doesn't meet your expectations within 90 days, you may be eligible for a refund. See our Easy Return Policy for details.

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