Complete rear AP Racing by Essex Radi-CAL Competition Brake Kit for the Porsche 987 S, 981 and 718 Boxster / Cayman (all except GT4) and a dedicated version for the 718 GTS 4.0. AP Racing Pro5000R four-piston Radi-CAL calipers, 340x28mm 48-vane heavy-duty J Hook two-piece discs, Spiegler stainless lines and brackets. Retains OEM parking brake function and shaves up to 16 lbs of unsprung weight from the rear of the car. Select your car and finish below.
Which variant do I need?
| Kit | Finish | Fits | Essex part # | Price |
|---|---|---|---|---|
| 340 mm – 987 S, 981 & 718 Boxster / Cayman, S, T, GTS 2.5 (CP9451) | Standard Anodized | Porsche 987 Boxster S / Cayman S (2005–2011), 981 Boxster/Cayman all except GT4 (2013–2016), 718 Boxster/Cayman, S, T, GTS 2.5 – 340x28mm discs, retains OEM parking brake | 13.01.10055 | $4,849 |
| 340 mm – 987 S, 981 & 718 Boxster / Cayman, S, T, GTS 2.5 (CP9451) | ENP (Electroless Nickel Plated) | Porsche 987 Boxster S / Cayman S (2005–2011), 981 Boxster/Cayman all except GT4 (2013–2016), 718 Boxster/Cayman, S, T, GTS 2.5 – 340x28mm discs, retains OEM parking brake | 13.01.10055-ENP | $5,049 |
| 340 mm – 718 GTS 4.0 (CP9450) | Standard Anodized | Porsche 718 Cayman GTS 4.0 and Boxster GTS 4.0 – 340x28mm discs, retains OEM parking brake | 13.01.10165 | $4,849 |
| 340 mm – 718 GTS 4.0 (CP9450) | ENP (Electroless Nickel Plated) | Porsche 718 Cayman GTS 4.0 and Boxster GTS 4.0 – 340x28mm discs, retains OEM parking brake | 13.01.10165-ENP | $5,049 |
What's in the box
- One pair AP Racing Radi-CAL Pro5000R racing calipers (four-piston, part number as shown in the kit name)
- One pair 340x28mm AP Racing CP6565 heavy duty J Hook racing discs, with fully floating 6061 hard anodized aluminum hats and attachment hardware
- Disc burnishing in Ferodo Racing pad compound included at no additional charge on GT-car kits (normally $150 per disc pair). If you are using a brake pad brand other than Ferodo and are interested in compatible disc burnishing, please contact Essex support prior to purchase.
- One pair caliper mounting brackets and hardware
- One pair Spiegler Stainless Steel Brake Lines with abrasion resistant coating
- Detailed installation instructions
Brake pads are not included. Racing pads are a personal choice, so Essex leaves them out of the kit price. The AP Racing Pro5000R calipers use industry-standard pad shapes stocked by every major pad manufacturer (Ferodo, Pagid, PFC, Raybestos, Endless, Hawk and more). Ask us to add a set at a bundled price.
Spare 340x28mm iron disc rings: CP6565-based rings – ask us.
Caliper finish. Standard kits use AP Racing's hard anodized finish. ENP kits use the same caliper with a jewel-like Electroless Nickel Plated finish that is exceptionally durable, resists brake dust staining and is easy to clean.
Confirmed wheel fitment (no spacer)
340 mm – 987 S, 981 & 718 Boxster / Cayman, S, T, GTS 2.5 (CP9451)
- OEM 19" wheel from 2010 Cayman S
- APEX SM-10 18x10" ET36
- OZ Alleggerita HLT 18 x 10.0" +40
- Volk Racing TE37 Ultra 19x10 ET40
Other wheels: download the Essex wheel fitment template for this caliper and check before ordering.
Ships direct from Essex Parts in the USA. Every kit is assembled, inspected and pressure tested before shipping. Pad tension (anti-rattle) kits are available separately.
