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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
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Description
Industry Nine A318 Stem - 31.8mm Clamp - 40mm Length - BlackIndustry Nine A318 Stem 40mm 31. 8mm Clamp + 4. 4 1 1 8" Aluminum Black. Industry Nine A Series mountain bike stems are crafted from domestically sourced 7075 aluminum billet into a svelte design achieving a nexus of form and function. Using advanced manufacturing techniques honed over decades in our CNC machine shop we continue our proud tradition of offering riders uncompromising components. The A35 and A318 utilize either a 35mm or 31. 8mm
Industry Nine A318 Stem - 40mm 31.8mm Clamp +/-4.4 1 1/8" Aluminum Black. Industry Nine A-Series mountain bike stems are crafted from domestically-sourced 7075 aluminum billet into a svelte design achieving a nexus of form and function. Using advanced manufacturing techniques honed over decades in our CNC machine shop we continue our proud tradition of offering riders uncompromising components. The A35 and A318 utilize either a 35mm or 31.8mm handlebar clamp diameter providing 180 degrees of contact on the stem body for twist-free security that will play nice with both alloy and carbon bars. Stainless steel hardware ensures everything stays in place and looks great regardless of mud-blasting washes or rainforest climates.
Need help deciding on the perfect stem length? Check out our stem length blog that details the different riding characteristics of different stem lengths to help you make the perfect choice.
- TECH SPECS
| Bar Clamp Diameter (mm) | 31.8 |
| Color | Black |
| Defined Color | Black |
| Length | 40 |
| Material | Aluminum |
| S.H.I.S. Stem Clamp Diameter | 28.6 |
| Stem Angle (deg) | +4.4 |
| Stem Angle (deg) | -4.4 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 1
Poorly manufactured
Holes do not align for assembly. Item returned.
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Reviewed in the United States on August 20, 2025
★★★★★ 5
Great fit
Size: Medium, Color: White
Perfect fit and they don't slide off the back of your ankle.
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
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Reviewed in the United States on October 21, 2025
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Style and comfort
Size: Medium, Color: Black
Exactly what I was looking for. Style and sock thickness and comfort.
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Reviewed in the United States on December 14, 2025