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Boundary Crank Sprocket Gear (2015 - 2026 Mustang / 2015 - 2026 F150) CM-SP-15

Boundary Crank Sprocket Gear (2015 - 2023 Mustang / 2015 - 2020 F-150) CM-SP-15

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Item#:
cm-sp-15
Price: $129.00
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Boundary Coyote Crankshaft Timing Sprocket (CM-SP-15) - 2015+ Ford Coyote 5.0L

When you’re building a high-RPM Coyote, the crank sprocket is not a place to cut corners. The Boundary CM-SP-15 Billet Crankshaft Timing Sprocket is engineered to be dramatically stronger than the factory powdered-metal piece, helping keep timing stable and your valvetrain happy under hard pulls, boost, and track abuse.

Manufactured 100% in-house from U.S.-sourced chromoly steel, this sprocket is hot-quenched and low-tempered for exceptional strength and wear resistance. Boundary backs that material advantage with precision CNC machining, tight broaching for a snug fit, and multiple dimensional checks before and after heat treat. With a significantly beefier keyway cross-section, upgraded tooth geometry, and a high-finish surface to reduce friction and chain vibration, the CM-SP-15 is built to handle the demands that break OEM hardware—especially on aggressive Coyote combos and aftermarket cranks.

Features

    • Billet chromoly steel construction is up to 10x stronger than OEM powdered metal
    • Heat treated to maximum hardness while retaining toughness
    • Precision CNC machined and broached for a snug, accurate fit
    • Dimensions verified after machining and after heat treatment for guaranteed fitment
    • ~80% more keyway cross-section than OEM for added strength
    • Heavier-duty design (approx. 170g vs. 130g OEM) for top-tier durability
    • High-finish surface reduces friction and timing chain vibration
    • Revised tooth geometry strengthens teeth and keyway engagement
    • Large Radius (LR) version fits cranks with a larger nose radius

Fitment

Ford Coyote 5.0L (2015–Present)
- 2015 Ford Coyote 5.0L (all applications)
- 2016 Ford Coyote 5.0L (all applications)
- 2017 Ford Coyote 5.0L (all applications)
- 2018 Ford Coyote 5.0L (all applications)
- 2019 Ford Coyote 5.0L (all applications)
- 2020 Ford Coyote 5.0L (all applications)
- 2021 Ford Coyote 5.0L (all applications)
- 2022 Ford Coyote 5.0L (all applications)
- 2023 Ford Coyote 5.0L (all applications)
- 2024 Ford Coyote 5.0L (all applications)
- 2025 Ford Coyote 5.0L (all applications)
- 2026 Ford Coyote 5.0L (all applications)

Large Radius (LR) Crank Fitment
- Fits Windberg, Callies, and other crankshafts with a large nose radius

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