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IF BUNDLED WITH FLUID and EXTEND! Covers One Way Only
Tackle tough jobs with the StreetMonster 4R100 transmission—a 4-speed automatic for heavy-duty trucks and high-performance vehicles. Known for its rugged construction and ability to handle up to 650 lb-ft of torque, the StreetMonster 4R100 is perfect for towing, hauling, and demanding applications. Whether you’re driving a Ford Super Duty or a vehicle with a diesel or high-output gas engine, this transmission ensures smooth, reliable shifts and dependable power under load.
Engineered for durability, the StreetMonster 4R100 features reinforced internals and an overdrive gear for improved fuel efficiency. Paired with a heavy-duty torque converter, it delivers seamless power transfer and consistent performance for everyday driving or heavy-duty demands.
Note
In-stock transmissions usually ship the next business day.
Custom builds or out-of-stock units typically ship within 2–4 weeks.
Need it sooner? Call us — we can often make special arrangements.
We offer the most comprehensive coverage in the industry:
Extend warranties are optional add-ons available during checkout.
No — we offer a $299 Flat-Rate One-Way Shipping to any address, commercial or residential.
If you find a better rate, you're welcome to arrange your own shipping.
No — fluid must be purchased separately. We offer special discounted prices and even cheaper shipping options when you bundle with our fluid at checkout.
Returning your core is simple. Once you are ready to return your core, you can initiate the return process in one of two ways:
Please Note:
Our goal is to make this process as seamless as possible — if you have questions about your core return, just give us a call.