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Description
Fox 987-24-031 2.5 Performance Series IFP HTO Shock AbsorberThe Fox 987 24 031 2. 5 Performance Series IFP HTO Shock Absorber from Guaranteed Auto Parts is a bolt on shock loaded with larger pistons, vehicle specific valving, and position sensitive technology to help improve on and off road performance. Featuring a type II anodized aluminum body that efficiently dissipates heat and prevents corrosion. The 2. 5 inch shock body is made with an internal floating piston (IFP) to separate the shock oil from the
The Fox 987-24-031 2.5 Performance Series IFP HTO Shock Absorber from Guaranteed Auto Parts is a bolt-on shock loaded with larger pistons, vehicle-specific valving, and position-sensitive technology to help improve on and off-road performance. Featuring a type II anodized aluminum body that efficiently dissipates heat and prevents corrosion. The 2.5-inch shock body is made with an internal floating piston (IFP) to separate the shock oil from the high-pressure nitrogen, optimizing damping.
The Hydraulic Top Out (HTO) technology offers usable position-sensitive rebound damping control on and off the pavement. HTO helps to reduce harsh top-outs and increases comfort by forcing shock oil through a secondary shim stack to slow down the shock shaft speed. HTO is particularly beneficial after installing heavier, aggressive tires and applications lifted higher than OEM specification. Bolt-on a pair of the Fox 2.5 Performance Series HTO shocks to increase damping capacity and ride in comfort with position-sensitive rebound control.
Specifications:
Travel: 5.590
Extended: 19.350
Top Mount: Bar Pin
Compressed: 13.770
Bottom Mount: Clevis
The Hydraulic Top Out (HTO) technology offers usable position-sensitive rebound damping control on and off the pavement. HTO helps to reduce harsh top-outs and increases comfort by forcing shock oil through a secondary shim stack to slow down the shock shaft speed. HTO is particularly beneficial after installing heavier, aggressive tires and applications lifted higher than OEM specification. Bolt-on a pair of the Fox 2.5 Performance Series HTO shocks to increase damping capacity and ride in comfort with position-sensitive rebound control.
Features:
- Corrosion Resistant
- 5/8" Hard Chrome Shaft
- Application Specific Tune
- Internal Floating Piston (IFP)
- Hydraulic Top Out (HTO) Piston
- Fully Rebuildable And Re-Tunable
- Type II Clear-Anodized Body Plating
- High-Flow Velocity-Sensitive Damping
- 2.5" Impact Extruded 6061-T6 Aluminum Shock Body
Specifications:
Travel: 5.590
Extended: 19.350
Top Mount: Bar Pin
Compressed: 13.770
Bottom Mount: Clevis
WARRANTY INFO:
1 Year Limited
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
4.7 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Well made
Size: Large, Color: Black (6-pairs), Number of Items: 6
These are the only socks that my 12 year old Grandson will wear. He's very picky. LOL
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
★★★★★ 5
Comfort and durability
Size: Large, Color: White (6-pairs), Number of Items: 6
Socks work really good. I have very rough and dry feet that tear up my bed sheets. They hold up to my destructive feet. They are soft and comfy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2025
★★★★★ 5
LOVE THEM!!
Size: Small, Color: (001) Black / Black / Castlerock
LOVE! These socks are so comfortable! I wear a 5 in women's and a 3 in big kid shoes. The small fit me perfectly. I see where some say they run small but I can't say that was an issue for me. They are "snug" but thats what you want with a no show sock. I feel they have support vs the ones i used to buy at Walmart. They are very soft! I am actually buying more today and throwing my other ones in the trash!
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Reviewed in the United States on February 18, 2026
★★★★★ 5
So will not write down your foot
Size: Medium, Color: (001) Black / Black / Castlerock
I love these socks. They have a little bit of gel on the top of the heel for support in your tennis shoes and so your socks don’t write down. Very good quality.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Comfy and Stay Put
Size: Medium, Color: (002) Black / Black / Halo Gray
These socks are honestly great. They’re super thin and light, so once you have them on, you kind of forget they’re even there. No bulky feeling in your shoes at all.
The best part is they actually stay on. I hate no-show socks that slide down after five minutes, and these don’t do that. The little grip on the heel really works, so you’re not constantly adjusting them all day.
They’re breathable too, which is nice if your feet run warm. They dry fast and don’t get that gross sweaty feeling. And there’s no annoying seam on the toe, so nothing rubs or feels uncomfortable.
Basically, they’re just comfy, stay put, and don’t cause problems — which is all I want from socks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
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