QuadBoss 04-08 Yamaha YFM660 Grizzly 4x4 High-Performance CDI

QuadBoss 04-08 Yamaha YFM660 Grizzly 4x4 High-Performance CDI

Marsoni

M251S

$148.74

Get it in 3 business days with 1 day shipping. Friday, May 29

QuadBoss 04-08 Yamaha YFM660 Grizzly 4x4 High-Performance CDIThese CDI Boxes are designed to enhance overall performance. Includes duplication circuits, increased RPM redline and altered ignition advance curves. Comes with altered advance curves to increase performance throughout the rpm range.

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I was a bit skeptical based on the price ($85 total after taxes) but you can tell that for the price, this thing is sturdy and high quality. Holds solid onto the vent and keeps my iPhone in place. Easy to adjust and move to your liking, also easy to turn 90* and have your phone sideways. Only drawback is that is obstructs the view of the clock on my 4Runner and slightly obstructs my windshield, but I am sure I will get used to it.

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Reviewed in the United States on May 14, 2026

Verified Purchase

Annika Chestnut

Lake Worth, US

★★★★★ 5

Great phone holder

I use this phone mount in my Subaru Impreza, and it works perfectly with my vents. It holds my phone super securely—no wobbling or slipping—so it’s great for navigation or hands-free use. Really solid and reliable for the price.

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Reviewed in the United States on November 5, 2025

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Amanda & Josh

Belleville, US

★★★★★ 4

Excellent product.

First impression: excellent product. The only reason I deducted a star is because the price is obviously quite insane.

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Reviewed in the United States on February 26, 2026

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Edward F Alves

Los Angeles, US

★★★★★ 5

A+ mount for 4Runners

This is the best phone mount I've ever had. Got it for my 2021 4Runner. Very strong, doesn't come loose, easy to place and remove the phone from the mount. Can't recommend enough.

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Reviewed in the United States on February 13, 2026

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Wildman

Pawtucket, US

★★★★★ 5

High quality

Very nice and secure. This one is built to last!

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Reviewed in the United States on May 11, 2026