Starter Motor for Yamaha TTR50E TT-R50E 2005–2017 TTR90 | OEM 1P6-H1890-00

Product Overview

Restore reliable starting performance to your Yamaha mini dirt bike with this 9-tooth 12V electric starter motor, designed for select Yamaha TT-R50E / TTR50E and TT-R90 / TTR90 models.

Built to replace OEM reference numbers 1P6-H1890-00, 1P6-H1800-01, 5DW-H1800-00, and 5HN-81890-00, this starter motor helps solve common starting problems such as slow cranking, no-start issues, weak starter engagement, clicking without turning the engine, or a worn-out original starter motor.

Manufactured with a durable metal housing, copper motor windings, and heavy-duty internal components, this starter motor is built to deliver dependable 12V starting power for youth dirt bikes, trail riding, and regular off-road use.

Product Compatibility

This 9T 12V electric starter motor is compatible with the following Yamaha models:

Brand	Model	Engine / CC	Year Range	Notes
Yamaha	TTR50E / TT-R50E	50cc	2005–2017	Verify OEM number before ordering
Yamaha	TTR90 / TT-R90	90cc	2004–2007	Verify OEM number and gear size
Yamaha	TTR50E / TT-R50E	50cc	2006–2024	Possible fitment based on cross-reference; confirm OEM and dimensions

OEM Cross Reference

1P6-H1890-00, 1P6-H1890-00-00, 1P6-H1890-01-00, 1P6-H1800-01, 1P6-H1800-01-00, 5DW-H1800-00, 5DW-H1800-00-00, 5HN-81890-00, 4ST-H1800-00, 49P-H1800-00

Specifications

Specification	Details
Part Type	Electric Starter Motor
Voltage	12V
Tooth Count	9 Teeth
Starter Type	PMDD
Rotation	CW / Clockwise
Gear Outer Diameter	Approx. 8.7 mm / 0.34 in
Gear Length	Approx. 23.4 mm / 0.92 in
Material	Metal housing with copper motor windings
Condition	100% New Aftermarket
Fitment Type	Direct Replacement
Installation	No installation instructions included

Key Features

• Direct Replacement Design – Engineered to replace the original Yamaha starter motor with matching 9-tooth fitment on compatible TT-R50E and TT-R90 models.
• Reliable Starting Performance – Helps restore smooth cranking and dependable engine start-up when the original starter motor becomes weak or fails.
• 9-Tooth 12V Design – Built with a 9T starter gear and 12V power configuration for compatible Yamaha mini dirt bike applications.
• Durable Construction – Made with a strong metal housing, copper windings, and heavy-duty internal components for improved service life.
• Easy Installation – Designed for straightforward replacement without extra adjustment when the OEM number and dimensions match.
• Built for Youth Dirt Bike Use – Suitable for trail riding, practice bikes, small off-road motorcycles, and regular starting cycles.