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Hughes Performance Extreme-Duty Transmissions
4L80E TRANSMISSION EXTREME DUTY
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Estimated Ship Date: Nov 5, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
25-1BX
Part Type:
Product Line:
Summit Racing Part Number:
HUP-25-1BX
Number of Gears:
4
Bellhousing Bolt Pattern Manufacturer:
Chevy
Transmission Shift Pattern:
Forward
Valve Body Style:
Automatic/Manual
Transmission Advertised Horsepower Rating:
1,500
Torque Converter Included:
No
Flexplate Included:
No
Transmission Controller Included:
No
Wiring Harness Included:
No
Transmission Cooler Included:
No
Trans-Brake Included:
No
Lockup Compatible:
Yes
Transmission Pan Style:
Deep
Transmission Pan Material:
Aluminum
Transmission Pan Finish:
Natural
Yoke Style:
Slip-on
Input Spline Quantity:
35
First Gear Ratio (Automatic Transmissions):
2.48
Transmission Case Style:
OEM
Transmission Case Material:
Aluminum
Transmission Case Finish:
Black
Transmission Shield Built In:
No
Flexplate Shield Built In:
No
Fluid Fill Location:
Case
Transmission Fluid Included:
No
Dipstick Included:
No
Remanufactured:
Yes
Quantity:
Sold individually.
Notes:
RWD applications
Hughes Performance Extreme-Duty Transmissions
Hughes Performance extreme-duty 4L80E automatic transmissions (such as model 25-1BX) are designed for high performance GM rear-wheel-drive applications. Rated for up to 1,500 hp, they feature upgraded internal components, including a billet input shaft, a 36-element sprag, and a deep aluminum pan, making them ideal for high-torque street/strip use.
Key features and specifications (model 25-1BX):
* Transmission type: GM 4L80E (4-speed automatic)
* Horsepower rating: Up to 1,500 hp
* Valve body: Automatic/manual with forward shift pattern
* Core upgrades: Billet input shaft, billet forward clutch hub, PTFE sealing rings, and heavy-duty forward clutch plates
* Case material/color: Aluminum / black
* Lockup compatible: Yes
* Generally fits Chevrolet/GM RWD vehicles, often used for high-performance GM trucks (C/K series) and street/strip cars
* Core components included:
-- Newer, robust Sprague (36-element)
-- High-performance red friction plates
-- Deep aluminum oil pan (natural finish)
Applications
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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