Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
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Description
Essex Designed AP Racing Radi-CAL Enduro Brake Kit - Front CP9668 (04-21 STI)Complete front Essex Designed AP Racing Radi CAL Competition Brake Kit for the Subaru WRX STI. Features AP Racing CP9668 Radi CAL six piston calipers, uses 25mm thick pad 355x32mm, 72 vane AP Racing disc Saves roughly 9 unsprung lbs. from nose vs. OEM brakes Every component designed to resist the heat of extended track sessions Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system Designed to work with OEM
Complete front Essex Designed AP Racing Radi-CAL Competition Brake Kit for the Subaru WRX STI.
- Features AP Racing CP9668 Radi-CAL six piston calipers, uses 25mm thick pad
- 355x32mm, 72 vane AP Racing disc
- Saves roughly 9 unsprung lbs. from nose vs. OEM brakes
- Every component designed to resist the heat of extended track sessions
- Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system
- Designed to work with OEM rear brakes
Advantages Over OEM Brake System
Our CP9668/355mm Radi-CAL Competition Brake Kit offers our customers the following advantages over the stock brake system:
- Eliminates approximately 9 lbs. of unsprung weight from the car's nose
- AP Racing Radi-CAL calipers are the stiffest, lightest, and most technologically advanced calipers available at any price
- CP9668 calipers use a 25mm (1 inch) thick, commonly available brake pad shape
- Ventilated, domed back, stainless steel pistons keep heat out of the brake fluid and provide an ultra-firm pedal
- Mitigation of pad knockback via anti-knockback springs behind the caliper pistons
- Anodized caliper finish that is resistant to wear and deterioration at elevated temperatures
- Stainless steel caliper hardware for a long caliper service life under frequent pad change conditions
- High temperature, low drag seals that will hold up to track temps= less rebuilding and longer service life
- No dust boots to burn up
- Simple pad change with two bolts or quick-change spring clip, no caliper removal required
- Lifetime professional caliper rebuilding support by Essex (at a fee)- pull off your calipers, send them to us, we clean, inspect, and rebuild them
- Available disc burnishing service ensures that your kit arrives ready to be installed and driven hard immediately
- Championship winning, 72 vane, fully floating, AP Racing J Hook endurance racing discs with 12 attachment points to hat
- Anti-knockback/anti-rattle disc attachment hardware
- Replacement iron disc rings available at an extremely competitive replacement price
- Disc metallurgy specifically designed to handle the temps typically seen on track offer a long service life
- Highest quality, Spiegler stainless steel brake line with clear sheath that reduces compliance over OEM rubber design
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
4.1 ★★★★★
Based on 1430 reviews
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Product Reviews
★★★★★ 5
Survived my dog… which almost nothing does!
Size: Medium, Color: Watermelon, Size: Medium, Color: Watermelon
I have a pit mix who is an expert-level destroyer of squeaky toys. Most “durable” toys last her maybe 5–15 minutes before the squeaker is gone.
This one lasted a full HOUR of play (constant squeaking, chewing, and trying to find a weak spot) and she still didn’t manage to break it. That’s honestly unheard of for her.
What I like:
The flat shape makes it hard for her to get a good “kill grip”
The squeaker isn’t easy to isolate and destroy
It keeps her engaged instead of just ripping it open immediately
She actually spent a lot of time just booping it with her nose to make it squeak, which she loves.
I ended up putting it away before she could eventually destroy it, and I’ll be rotating it to make it last longer. It’s now a high-value toy in our house.
If you have a dog that destroys every squeaky toy in minutes, this is absolutely worth trying. I’m already planning to buy more from this line.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
★★★★★ 3
Not for aggressive chewers
Size: Medium, Color: Carrot
This product is pretty strong, but my dog tore it apart in 5 minutes. The size is great, and my dog loved tearing it apart. I wish it lasted longer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 4
Good!!!
Size: Medium, Color: Avocado
Excellent quality and durability.My pets really enjoy it and it's almost impossible to damage it!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 5
Recommended by my chihuahua puppy!
Size: Small, Color: Waffle, Size: Small, Color: Waffle
This has been a fantastic toy for my chihuahua puppy. She actually carries it around by the tag and loves rolling it over with her nose. It's a little big for her, but she still really enjoys it.
The tough edges are perfect for her little tiny shark teeth. I think she'll like this one even more as she begins teething.
It's obviously an adorable toy and it has held up really well so far. It does have a loud squeaker if that's something your dog likes or dislikes. Mine doesn't have the jaw strength or size to squeak it, but she likes it when I do it.
Considering what I paid and the many low quality toys on the market, this thing is a great value. Highly recommend it for toy and small breed dogs and puppies!
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Tough Versatile Interactive & Chew Toy
Size: Medium, Color: Strawberry
Update: the Snake is the absolute best in terms of entertainment value. Provides tugging opportunities and our dog is obsessed with it. Love these toys.
This is quite literally one of the only toys we can leave with our puppy as both an interactive and self-play chew toy. Our small puppy (<20lbs) destroys every plush and latex toy in minutes. Has no interest in playing alone with durable toys like Kong and gets bored of them if we don’t play with them interactively. This satisfies our dog’s needs to chew on toys and keeps her entertained when we want a break but also quickly becomes a beloved interactive toy we can play fetch with. Yes, eventually our doggo destroys it as expected since we are using to both as a chew and interactive toy but it takes quite a while and we are very satisfied and impressed. This one stands the test of time.
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Reviewed in the United States on May 8, 2026
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