Straub 100-1315 Valve Locks 10-Degree 8mm Radial Groove Machined Steel 16 Pairs

The Straub 100-1315 valve locks are precision-machined steel keepers designed for 8mm valve stems with a radial groove configuration. These high-performance valve locks feature a 10-degree taper angle and standard installation height, making them ideal for race and high-performance engine applications.

Key Features:

• 10-degree taper angle for easier disassembly and improved load distribution in racing applications
• 8mm radial groove design provides up to 30% longer valve stem life compared to square groove designs
• Machined steel construction with black oxide finish for superior durability and wear resistance
• Radial groove design helps cushion impacts during valve float conditions, protecting valve stems from damage
• Standard installation height for direct replacement in compatible applications
• Includes 16 pairs (32 individual pieces) for complete multi-cylinder engine builds

Valve locks (also called valve keepers) secure the spring retainer on top of the valve spring by fitting around the valve stem groove. The radial groove design used in these Straub locks features a completely radiused inner groove that reduces wear and prevents catastrophic failure during high-RPM operation. The 10-degree angle allows for easier valve lock removal during engine maintenance while providing excellent clamping force under high spring pressures. These locks are precision-machined to tight tolerances, ensuring proper fit with compatible valve stems and retainers.