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Home Buy Transmission and Drivetrain Automatic Transmissions FTI Performance TH400 Level 4 Transmissions TH400-4UB
FTI Performance TH400 Level 4 Transmissions TH400-4K21
FTI Performance TH400 Level 4 Transmissions TH400-4K21 $2,379.00
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TCI StreetFighter Transmissions 511200
TCI StreetFighter Transmissions 511200 $1,290.00

FTI Performance TH400 Level 4 Transmissions TH400-4UB

$1,590.00

Automatic Transmission, Level 4, TH400, Trans-Brake, Chevy Ultrabell, Each

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Category: Automatic Transmissions
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Description

Overview

Brand: FTI Performance
Manufacturer’s Part Number: TH400-4UB
Part Type: Automatic Transmissions
Product Line: FTI Performance TH400 Level 4 Transmissions
Summit Racing Part Number: FTI-TH400-4UB
UPC: 887753825643
Number of Gears: 3
Bellhousing Bolt Pattern Manufacturer: Chevy
Transmission Shift Pattern: Reverse
Valve Body Style: Full manual
Transmission Advertised Horsepower Rating: 900
Torque Converter Included: No
Flexplate Included: No
Transmission Controller Included: No
Wiring Harness Included: No
Transmission Cooler Included: No
Trans-Brake Included: Yes
Lockup Compatible: No
Transmission Pan Style: Deep
Transmission Pan Material: Aluminum
Transmission Pan Finish: Natural
Tailshaft Length (in.): 4.063 in.
Yoke Style: Slip-on
Input Spline Quantity: 30
Input Shaft Material: Hardened steel
Input Shaft Style: TH350/400
First Gear Ratio (Automatic Transmissions): 2.43
Clutch Hub: Billet Steel
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
SFI Rating: SFI 4.1/ 30.1
Remanufactured: Yes
Quantity: Sold individually.
Notes: Features Ultra Bell bellhousing.

FTI Performance TH400 Level 4 Transmissions

FTI Performance TH400 Level 4 transmissions feature a full manual valve body equipped with a transbrake for the ultimate drag racer. They make an excellent choice for weekend bracket racers, high-powered street cars, and mud trucks. The transmissions have: a 34-element intermediate sprag, performance clutches and steels, high-flow pump, race-prepped stock case, deep aluminum pan, billet forward clutch hub, heavy-duty intermediate retainer, and a 4-clutch intermediate pack. Some models are compatible with Ultra Bell bellhousings.

Shipping & Delivery
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Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

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    • Phone: +1 (714) 694-3374
    • E-mail: sales@xfactorsmotorsports.com
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