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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
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Description
a&m gear 23-831BK AEM Evo 4-9 Black Adjustable Tru-Time Cam GearsAEM Tru Time black anodized adjustable cams gears for the Evo 4 5 6 7 8 9 models. Sold as a pair or individually. Please note, the MIVEC Evo 9 models must use the OEM intake cam gear. For Evo 4 8, the same gear fits both cams. Vehicle Fitment: 1996 2006 Evolution IV V VI VII VIII IX* *Does not replace the MIVEC Evo 9 intake cam gear Cam Gear: Fitment: Intake Cam Gear Fits Evo 4 5 6 7 8 Does not fit Evo 9 Exhaust Cam Gear Fits Evo 4 5 6 7 8 9 More
AEM Tru-Time black anodized adjustable cams gears for the Evo 4/5/6/7/8/9 models. Sold as a pair or individually. Please note, the MIVEC Evo 9 models must use the OEM intake cam gear. For Evo 4-8, the same gear fits both cams.Vehicle Fitment:
1996-2006 Evolution IV V VI VII VIII IX*
*Does not replace the MIVEC Evo 9 intake cam gear
| Cam Gear: | Fitment: |
| Intake Cam Gear | Fits Evo 4/5/6/7/8 Does not fit Evo 9 |
| Exhaust Cam Gear | Fits Evo 4/5/6/7/8/9 |
More Info:
AEM Tru-Time Adjustable Cam Gears increase horsepower and torque without having to change the camshafts and are must-have items for engines that are milled, forced induction, high compression and/or utilizing aftermarket competition cams.
AEM gears enable users to match cam timing with their vehicle's tuning state by advancing or retarding the cam profile in one-degree increments via true laser-etched markings.
Precision-cut gear teeth ensure no premature wearing of the belt surface and AEM's anodizing on the gear teeth is lab-test proven as the hardest anodizing process on the market.
Discounts:
We are sorry, but discount codes are not available for AEM products.
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- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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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
4.8 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Soft and warm!
Color: Grey & Blue, Size: Large
These are so comfy and colors are awesome. I don’t dry in the dryer! Keep my feet warm all day long. Perfect stretch and softness.
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Reviewed in the United States on February 13, 2026
★★★★★ 5
Great socks!
Color: Blue & Green, Size: Medium
Super comfy, and fits as described. Loved the colors, and they keep my feet dry + warm!
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Reviewed in the United States on December 8, 2025
★★★★★ 5
Well worth it
Color: Black & Grey, Size: Large
Great fit and not too hot. I really like these socks. They are comfortable, keep my feet warm without overheating them and the material is holding up well. The colors are true and they are not too thick that my shoes fit tight.
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Reviewed in the United States on December 3, 2025
★★★★★ 4
Comfy but not no-show
Color: Black & Grey, Size: Medium
They feel good and are comfortable and warm, but they are not “no-show” as described.
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Reviewed in the United States on December 25, 2025
★★★★★ 3
Socks
Color: Blue & Green, Size: Medium
They are about what I expected for the price. Nice and warm, but they pill a lot and sit higher on my ankle than I'd like. Very cozy and comfy though. Great around the house, not really great for hiking though. Kinda thin after a few uses outdoors. Washable but not very durable.
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Reviewed in the United States on November 21, 2025