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Description
Mounting Kit Required.
FEATURES
- STI makes a strong statement with the HD4, a stylish addition to the proven HD Alloy wheel line: bold aesthetics and bulletproof performance are here.
- The dramatic STI HD4 is available in two distinctive finishes, Black Machined and solid Matte Black.
- Low-profile center caps, perfectly matched to each finish, help the STI HD4 stand out and are included with every wheel.
- The HD4 is as tough as it is classy, boasting load ratings of 1000 lbs for both the 12" and 14" models.
- Lifetime structural warranty
* Must purchase specific center caps (part # CAPVIKEGB) for Yamaha Viking and Wolverine side-by-sides
NOTE: This item may be subject to additional shipping charges.
Technical Specifications
- MFG. Part Number 12HD401
Vehicle Information
Yamaha Grizzly 350 ATV (2007-2021)
The Yamaha Grizzly 350, produced from 2007 to 2021, established itself as a reliable and robust utility ATV. Powered by a consistent 348cc air/oil-cooled, single-cylinder, SOHC, 4-stroke engine with a Mikuni 33mm BSR carburetor, this model was known for its durability rather than peak horsepower. It maintained a largely unchanged engine and transmission (Yamaha's Ultramatic V-belt automatic) throughout its production run, focusing on dependable performance for work and recreation. While the core platform remained consistent, the Grizzly 350 offered key variations in its drivetrain and suspension. Models included the 2WD Automatic, the 4x4 Automatic with Yamaha's On-Command system, and the notable IRS Auto 4x4. The Independent Rear Suspension (IRS) trim provided enhanced comfort and improved handling over rough terrain compared to the standard swingarm rear suspension, representing the most significant differentiation within the series rather than a full generational change. This consistency underscores its reputation as a "no-frills workhorse." Q: Is this product compatible with my Yamaha Grizzly 350?
A: To ensure perfect compatibility, please use the year and edition selector at the top of this page. This will filter products specifically designed for your ATV's configuration. Q: Did the Grizzly 350 receive any major engine or chassis updates between 2007 and 2021?
A: The Yamaha Grizzly 350 maintained a remarkably consistent design and engine specification throughout these years. While different trims offered variations like Independent Rear Suspension, there were no major generational overhauls or significant engine changes during this period.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | Initial: 20-25 hours or 3 months. Subsequent: 50-100 hours or annually. | Replace oil filter with every engine oil change. |
| Air Filter | 100 hours or 12 months | Inspect and clean frequently, especially after every ride in dusty or muddy conditions. Replace more often if necessary. |
| Spark Plug | 200 hours or 6,400 km or annually | Inspect around 100 hours. |
| CVT Drive Belt | Inspect every 25-50 hours | Replace at the first sign of damage (cracking, glazing, fraying, thinning). |
| Coolant | Check level monthly. Replace every 200 hours or 2 years. |