2015-2026 Mustang Boundary Crankshaft Gear w/ Grip Surface - 5.0 by Boundary

Price: 169.00 USD
Availability: InStock

2015-2026 Mustang Boundary Crankshaft Gear w/ Grip Surface - 5.0

How To Install Gen 2 Coyote Oil Pump Gears & Crank Sprocket

Upgrade your factory crankshaft sprocket with this hardened 2015-2026 Mustang 5.0 crankshaft gear with a grip surface from Boundary!

Item #LRS-CMSP15G

Everyday Low Price: $169.00

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LMR showroom & will call pickup service will be closed beginning Monday 9/21/26 for renovations until further notice. Need help? Contact Us.

Benefits

50% Stronger Than Factory
High Strength Materials
Made In America

Features

Rockwell C Scale Hardness of 50-55
4340 Chromoly Steel Construction
Anti-Burst Ring Design

What's in the Box

(1) Crankshaft Sprocket

Boundary Crankshaft Gear w/ Grip Surface
Take your crankshaft gear sprocket to the next level with this Boundary 2015-2026 Mustang 5.0 crankshaft gear sprocket with grip surface. From the factory, your engine has a powdered metal crankshaft gear/timing chain sprocket, and when you start to add parts that increase horsepower and run high RPM, the factory sprocket becomes the weak link. The Boundary crankshaft timing sprocket with a grip surface improves the durability of the crankshaft snout and keyway by limiting the movement of the harmonic balancer. After adding this sprocket to your motor, you will be ready to handle the high horsepower and high RPM track sessions with peace of mind!

High-Quality Construction
Designed and manufactured right here in the USA, this crankshaft gear sprocket is constructed from heat treated 4340 Chromoly Billet for the ultimate protection for your motor! The Boundary achieved 50% more strength with their crankshaft gear sprocket over the factory piece by adding an anti-burst ring to the design. With the added grip surface, they achieve 80% more cross-section versus OEM at the keyway.

Features

Heat treated for maximum hardness and toughness
Precision CNC machined and broached for a snug and accurate fit
Dimensions are meticulously checked after machining and heat treatment, guaranteeing a perfect fit
80% more cross-section than the OEM sprockets at the keyway, enhancing durability
Weighs 30% more than the OEM sprockets (170 grams vs 130 grams), providing the highest-strength sprocket on the market
A high finish reduces friction and minimizes chain vibration
New tooth geometry strengthens teeth and keyway for added reliability

Boundary Warranty - Click Here

Ford Mustang - 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Engines: 5.0

How To Install Gen 2 Coyote Oil Pump Gears & Crank Sprocket

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

How To Install Gen 2 Coyote Oil Pump Gears & Crank Sprocket

Published 9/9/25

California Residents:

WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

About This Brand

Boundary delivers cutting edge technology by using state of the art CNC milling and turning equipment for their products. Boundary was founded in 2003 and specializes in producing various metal goods for the automotive racing industry. As early as 2005 they began researching and understanding the complexities of manufacturing gear pumps commonly used in the automotive racing industry. In 2008 they launched their first gear products. Since then, they've sold thousands of high-quality oil pump gears!