The Performance Machine Seal Kit 125x2 (Part No. 0052-3001) is the factory-specified caliper rebuild kit for Performance Machine's 2-piston Classic brake caliper. If your PM caliper is seeping brake fluid, feeling spongy, or simply due for a scheduled service, this is the correct seal kit to restore it to like-new braking performance. Sourced directly from Performance Machine — the California-based brand trusted by Harley-Davidson custom builders and touring riders for decades — this kit gives you a clean, cost-effective path to a full caliper rebuild without replacing the entire unit.
Key Features & Benefits
- Designed specifically for the PM 2-Piston Classic Caliper: The kit designation "125X2" matches Performance Machine's own caliper rebuild kit catalog, so you know you're getting seals engineered to the correct tolerances for your caliper bores — not a generic one-size-fits-all alternative.
- Restore braking confidence: Worn or degraded caliper seals are a leading cause of brake fluid weeping and soft lever feel. Replacing them with fresh seals brings your hydraulic system back to proper spec, giving you firm, consistent brake engagement.
- Cost-effective maintenance: At under $30, this rebuild kit is a fraction of the cost of a replacement caliper, making it the smart choice for riders who want to keep their Performance Machine braking system in top shape without a major parts expense.
- Genuine Performance Machine part: Manufactured and cataloged by Performance Machine (MPN: 0052-3001) and sold as a replacement part in their official Replacement Parts lineup, ensuring material compatibility with your existing caliper hardware.
- Compact and easy to stock: Small and lightweight, this kit is a sensible item to keep on hand for any shop or garage that services PM-equipped motorcycles regularly.
Specifications
- Brand: Performance Machine
- Part Number (MPN): 0052-3001
- Kit Designation: 125X2
- Application: 2-Piston Classic Caliper Rebuild Kit
- Proposition 65: Yes — see California Prop 65 warning
Fitment
This seal kit is designed to rebuild the Performance Machine 2-Piston Classic brake caliper. Based on available fitment data, it has been noted for use on Harley-Davidson applications including the FLSTC Heritage Softail Classic (1992 and 1993, Front) among others equipped with the PM Classic caliper. Because Performance Machine calipers are used across a wide range of custom and stock-replacement brake setups on Harley-Davidson and other V-twin platforms, the best way to confirm this kit fits your specific caliper is to verify that your caliper is the PM 2-Piston Classic model and that 0052-3001 is the rebuild kit listed for it. If you are unsure, contact the ThreePiece.us fitment team before ordering — we are happy to help verify compatibility.
Note: This kit is specific to the Performance Machine 2-piston Classic caliper. It is not intended for PM's other caliper families (such as 4-piston or 6-piston designs) or for OEM Harley-Davidson calipers.
What's in the Box
This listing is for one (1) Performance Machine Seal Kit 125x2, which includes the seals required to rebuild the PM 2-piston Classic caliper. Refer to Performance Machine's installation instructions for the complete rebuild procedure and torque specifications.
Why Buy from ThreePiece.us
- Free Shipping: Every order ships free — no minimum required.
- Affirm Financing: Break your purchase into manageable payments with Affirm financing, available at checkout.
- Expert Fitment Support: Our team has served 10,000+ customers and is available to help confirm part compatibility before you buy. Call us at 813-535-5801 or email [email protected].
- In-Stock Availability: This product is regularly stocked, so you won't be waiting weeks for a critical brake service part.
Frequently Asked Questions
Q: Which Performance Machine caliper does this seal kit fit?
A: The 0052-3001 kit is specifically designated for the Performance Machine 2-Piston Classic caliper. Performance Machine lists it in their Replacement Parts category under the title "Caliper Rebuild Kit – 2 Piston Classic Caliper." If your PM caliper is a different piston count or series, you will need a different rebuild kit.
Q: Is this the complete seal kit needed for a full caliper rebuild?
A: This kit contains the seals for the PM 2-piston Classic caliper rebuild. For the complete rebuild procedure, consult the installation instructions available from Performance Machine. If you have questions about what's included, contact our team and we can help clarify before you order.
Q: Does this part carry a Proposition 65 warning?
A: Yes. This product is subject to California Proposition 65. It carries a warning for cancer and reproductive harm. See p65warnings.ca.gov for more information.
Q: How do I know if this kit is compatible with my specific motorcycle?
A: The key question is whether your motorcycle is equipped with a Performance Machine 2-Piston Classic caliper — not simply what year or model your bike is. PM calipers are frequently used on custom builds and as aftermarket upgrades on Harley-Davidson platforms. If you need help confirming compatibility, reach out to our fitment specialists at ThreePiece.us before placing your order.
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