Boundary CM-SP-15-LR Billet Crank Timing Sprocket for 2015-25 Coyote

Vehicle Fitment

• Ford Mustang - 2015 and newer, 5.0 L Coyote V8
• Ford F-150 - 2015 and newer, 5.0 L Coyote V8
• Specifically for crankshafts with *large nose radius* (e.g., Windberg, Callies)

Features

• Billet chromoly steel construction for superior strength over OEM powdered-metal sprockets
• Heat-treated for maximum hardness while retaining toughness
• Precision CNC-machined and broached keyway for snug, accurate fit
• 80% more cross-section at the keyway vs OEM for better durability
• High mass (≈ 170 g) - about 30% more than OEM - to improve strength and longevity
• High finish surface reduces friction and timing chain vibration
• New tooth geometry optimized to strengthen both teeth and the keyway
• Specifically made for large-nose radius aftermarket cranks (LR version)

Specifications

• Part Number: CM-SP-15-LR
• Material: Heat-treated Chromoly Steel
• Weight: ~170 g (0.37 lb)
• Fitment: 2015+ Ford Coyote V8 with large-radius crank snout
• Keyway: CNC-broached for tight tolerance
• Design: Billet timing sprocket with reinforced geometry

Included Components

• 1x Billet Crankshaft Timing Sprocket (CM-SP-15-LR)

Product Description

The **Boundary CM-SP-15-LR** is a high-strength, billet crankshaft timing sprocket crafted for 2015 and newer Ford Coyote V8 engines that use an aftermarket crankshaft with a **large nose radius** (such as those from Windberg or Callies). Built entirely from chromoly steel and heat-treated, this sprocket offers significantly greater durability compared to the factory powdered-metal version.

Its CNC-machined keyway and 80% increased cross-section at the keyway core help bolster strength where failure can often occur. At approximately 170 g, it's heavier than OEM, contributing to greater structural integrity. The high-finish surface reduces friction and timing-chain vibration, while the optimized tooth geometry provides better reliability. If you're running a modified or forged crank with a large-diameter snout, this LR variant is specifically designed to fit and perform.