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Description
Box Four 8 Speed Wide/Narrow ChainringThe Box Four Wide Narrow chainring completes that package for the 1x8 system. It is the first 8 speed specific chainring designed to optimize chain retention when using 8 speed chains. The tooth profile and thicknesses are tailored to match the inside geometry of the unique Box Four chain. SUPPORT MATERIAL View Prime 9 Drivetrain Compatibility Manual How is the Ebike variant different? View Prime 9 Comparison Chart Why Prime 9?
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.2 ★★★★★
Based on 934 reviews
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Product Reviews
★★★★★ 5
Frenchie approved
Color: A.Orange+Blue+Green
Frenchie approved
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Soft and light
Color: A.Orange+Blue+Green
My doxie loves them
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Reviewed in the United States on April 26, 2026
★★★★★ 5
The tennis balls are very well made.
Color: Yellow, Size: 20 PACK
Bought this bag of tennis balls for my son’s dog. He has a tennis ball launcher that he shoots and she runs to get the ball and bring it back.
Perfect training toy!
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Great value.
Color: Yellow, Size: 20 PACK
They bounce and they float. Color is bright. Great for my dogs. I let my dogs use these instead of the ChuckIt brand when unsupervised because they tend to get punctured.
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Reviewed in the United States on March 22, 2026
★★★★★ 5
Bright color
Color: Orange, Size: 20 PACK
Dog training, perfect color can be seen in the grass and water
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Reviewed in the United States on May 25, 2026
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