AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4
AP Racing by Essex Radi-CAL Competition Front Brake Kit 394mm – Porsche 718 GT4, GT4 RS, Spyder & 981 GT4

AP Racing by Essex Radi-CAL Competition Front Brake Kit – Porsche 718 GT4 & GT4 RS

  • Sale
  • $7,349.00

Complete front AP Racing by Essex Radi-CAL Competition Brake Kit for the Porsche 981 Cayman GT4, 718 Cayman GT4, 718 Spyder, 718 Cayman GT4 RS and 718 Spyder RS. AP Racing Pro5000R six-piston Radi-CAL calipers with ventilated stainless pistons and anti-knockback springs, 394x34mm 84-vane J Hook two-piece discs (burnished in Ferodo compound at no charge), Spiegler stainless lines, brackets and caliper bridge pad tension clips. Saves up to 15–18 lbs of unsprung weight vs. the OEM iron brakes, weighs about the same as PCCB, and lets you change pads without removing the caliper. The GT4 RS / Spyder RS share the 991 GT3 kit. Select your car, caliper and finish below.

Which variant do I need?

Kit Caliper Finish Fits Essex part # Price
394 mm – 981 / 718 Cayman GT4, 718 Spyder CP9661 Standard Anodized Porsche 981 Cayman GT4, 718 Cayman GT4 and 718 Spyder (iron or PCCB cars) – 394x34mm discs 13.01.10083 $7,349
394 mm – 981 / 718 Cayman GT4, 718 Spyder CP9661 ENP (Electroless Nickel Plated) Porsche 981 Cayman GT4, 718 Cayman GT4 and 718 Spyder (iron or PCCB cars) – 394x34mm discs 13.01.10083-ENP $7,549
394 mm – 981 / 718 Cayman GT4, 718 Spyder CP9669 ENP (Electroless Nickel Plated) Porsche 981 Cayman GT4, 718 Cayman GT4 and 718 Spyder (iron or PCCB cars) – 394x34mm discs 13.01.10168-ENP $7,999
394 mm – 718 GT4 RS, Spyder RS CP9661 Standard Anodized Porsche 718 Cayman GT4 RS and 718 Spyder RS (iron or PCCB cars) – 394x34mm discs 13.01.10073 $7,349
394 mm – 718 GT4 RS, Spyder RS CP9661 ENP (Electroless Nickel Plated) Porsche 718 Cayman GT4 RS and 718 Spyder RS (iron or PCCB cars) – 394x34mm discs 13.01.10073-ENP $7,549
394 mm – 718 GT4 RS, Spyder RS CP9669 ENP (Electroless Nickel Plated) Porsche 718 Cayman GT4 RS and 718 Spyder RS (iron or PCCB cars) – 394x34mm discs 13.01.10167-ENP $7,999

What's in the box

  • One pair AP Racing Radi-CAL Pro5000R racing calipers (CP9661 or CP9669 six-piston)
  • One pair 394x34mm AP Racing 84 vane, 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
  • Caliper Bridge Pad Tension Clips (anti-rattle clips) on 394mm kits
  • 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.

CP9661 vs. CP9669. Both are AP Racing Pro5000R Radi-CAL six-piston calipers with ventilated stainless pistons and anti-knockback springs. The CP9661 uses the common 18mm-thick FRP3144 pad shape. The CP9669 takes 25mm-thick (1") pads for longer pad life and more thermal mass; it is about 1 lb heavier per corner and needs ~14mm more wheel spoke clearance. CP9669 kits are supplied in ENP finish only.

Spare 394x34mm iron disc rings: 13.05.10050 (RH) / 13.05.10051 (LH) with 12-bolt hardware kits – 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)

394 mm – 981 / 718 Cayman GT4, 718 Spyder

  • OEM front 20x8.5" (GT4) or 20x9.0 (GT3)
  • APEX All 19" and 20" wheels (VS-5RS and EC-7RS)
  • Forgeline GE1R 19x9.0" & 20x9.0" +52
  • Forgeline SS1R 19x9.0" & 20x9.0"
  • Forgeline VX1R 19x9.5" (GT3 RS) & 20x9.5" (GT3 RS)
  • Forgeline GS1R 19x9.0" & 20x9.0"
  • Forgeline GA1R 19x9.0" & 20x9.0"
  • OZ Racing Superforgiata Centerlock 19x9.0" +47

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.

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