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Ferrea 7 Degree Radial Steel Valve Locks - 11/32 in Stem, +0.050 in Installed Height

Ferrea SKU: FERK10109
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These are radial groove valve locks for 11/32 inch valve stems, cut to a 7 degree taper. The radial groove spreads clamping load around the stem rather than concentrating it on a single bead, which suits high lift and high spring pressure valvetrains. The +0.050 designation is installed height, not an oversize bore: the lock seats the retainer 0.050 inch higher up the stem and raises spring installed height by the same amount, which is how you dial in spring pressure without changing shims. Machined from 4140 chromoly bar stock, heat treated and black oxide finished.

Specifications

Type Radial groove valve locks (keepers), 7 degree
Valve Stem Diameter 11/32 in
Installed Height +0.050 in (raises spring installed height)
Material 4140 chromoly bar stock, heat treated
Finish Black oxide
Part Number K10109

Shipping

  • Orders placed before 3 PM ET typically ship the same business day. Some items ship within 1 to 3 business days.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Backordered items ship as soon as stock lands. Contact us for lead times.
  • International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

  • 30-day returns on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
  • Installed or used parts cannot be returned. Confirm fitment before you install.
  • Special orders and custom items are final sale.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy
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