The Trickstuff PCA Pump Oil ASM Membrane + Piston Kit is the complete maintenance solution to guarantee optimal performance of your Piccola Carbon (PCA) brake pump. Designed and manufactured in Germany with legendary Trickstuff precision, this service kit includes all the seals, membranes and pistons necessary for complete pump reconditioning, ensuring perfect sealing, precise modulation and consistent braking power.

Technical highlights

• Complete service kit for PCA pump: Compatible exclusively with Trickstuff Piccola Carbon master cylinders, operating with mineral oil or bio-based Bionol fluid.
• High-precision master piston: Original piston with primary and secondary seals CNC-machined to minimal tolerances, guaranteeing smooth stroke without excessive resistance.
• Rectangular expansion membrane: Non-square shape for precise positioning and optimal reservoir sealing — critical orientation for proper operation.
• Mounting and hardware set: Includes circlip (sharp edge facing outward), dead stroke spacer, piston spring, M5 bleed screw with O-ring and all necessary hardware.
• Uncompromising German manufacturing: All components are manufactured in Germany with premium materials (7075 T6 aluminum, stainless steel) and rigorous individual quality control.

Professional service and maintenance

This kit is essential for regular maintenance of your Piccola Carbon pumps. Trickstuff recommends periodic service to maintain reliability, prevent leaks and guarantee a consistently sharp pressure point. Each pump requires one kit — for a complete brake set (front + rear), therefore plan for two kits. Installation, detailed in the Trickstuff service manual, requires care: application of assembly grease (Interflon type) on the primary seal, correct orientation of the rectangular membrane, and circlip mounting with the sharp edge facing outward.

Compatibility and applications

Designed specifically for PCA (Piccola Carbon, Piccola Carbon HD) pumps, this kit works with all Trickstuff mineral oil-compatible calipers (C22, C41, C42, MXA) as well as other oil-based calipers on the market. The PCA pump, with its 9 mm master piston and moderate lever kinematics, offers an impressive power ratio despite its compactness (36.5 g for the carbon version). This kit ensures that this technical architecture continues to deliver power, modulation and reliability on the most demanding descents, whether MTB enduro, DH, road or gravel.

The Trickstuff philosophy

Founded in 2003 in Pfaffenweiler (Breisgau region, Black Forest), Trickstuff GmbH embodies German excellence in cycling braking. Each brake is hand-assembled in a craft workshop, where passion and attention to detail take precedence over financial compromises. Since its acquisition by the DT Swiss group, Trickstuff has been able to expand production without sacrificing quality standards. Trickstuff products equip World Cup teams and demanding enthusiasts worldwide, demonstrating unmatched reliability, precision and technical innovation.