This Lainer Suspension fork check valve is a service part used to regulate oil flow within the damping circuit. With an M6 x 1.00 thread, it suits a range of fork systems including Showa, KYB, WP and Marzocchi. Supplied as a single piece for workshop servicing and rebuild work.

Inside the System

A check valve controls the direction of oil flow through parts of the damping circuit. When operating correctly, it helps the fork’s damping system behave consistently by allowing or preventing flow in the intended direction.

Serviceability

Replace a check valve when it is damaged, contaminated, sticking, or shows wear that prevents it from sealing or moving freely. It should not be replaced purely as a routine item if it remains clean, undamaged, and functions correctly during inspection as part of a fork service.

Compatibility

  • Brand: Lainer Suspension
  • Fork systems: Showa, KYB, WP and Marzocchi
  • Thread size: M6 x 1.00

Setup & Workshop Notes

  • Confirm thread and application before installation.
  • Keep components clean during assembly to avoid debris affecting valve operation.
  • Sold individually (order two for a pair).

Key Features

  • Fork check valve service part
  • M6 x 1.00 thread
  • Designed for multi-brand fork servicing (Showa/KYB/WP/Marzocchi)
SKU CHECKVF_6X1.00_ALL
Barcode # CHECKVF6X1.00ALL
Brand Lainer Suspension
Shipping Weight 0.0200kg
Shipping Size 0.050 x 0.050 x 0.050m
Unit Of Measure ea
See our Shipping Information See our Frequently Asked Questions
Thread Size M6 x 1.0

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