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McLeod 4952-00-02 Soft-Lok Drag Racing Clutch Kit 10.5" x 1 x 23 Spline 143T 6-Bolt Mopar

(Chrysler 300 1964-71, Town & Country 1970-77, Newport 1965-78, New Yorker 1970-78, Imperial 1966-67, 1970-75; Dodge Charger 1966-74 + 53 more models)

Manufacturer

Picture for manufacturer McLeod

Part Number

4952-00-02
4 reviews
Sale Price

$1,850.00

Estimated ship date Tuesday, November 17

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Product Details

The McLeod 4952-00-02 Soft-Lok is a complete drag racing clutch assembly engineered for classic Mopar big-block applications with a 6-bolt crankshaft and zero balance. Featuring a 10.5-inch disc, 1-inch input shaft, and 23-spline configuration with a 143-tooth flywheel ring gear, this kit is purpose-built for maximum performance on the strip.

⚠ For Drag Racing Use Only — NOT Recommended for Street Use.

As an NHRA and IHRA record-holding clutch assembly, the Soft-Lok's patented design uses low static pressure to deliver a light pedal feel and soft clutch engagement at launch, while still providing enough clamping force to hold power through the entire run. The result is harder launches with less tire spin and consistent, repeatable performance pass after pass.

Key Features:

  • 10.5" disc diameter — 1" input shaft, 23-spline
  • 143-tooth aluminum flywheel — lightweight billet construction for reduced rotational mass
  • Sintered iron 5135 compound friction disc — high friction and durability for racing conditions
  • Adjustable long-style pressure plate — fully tunable spring pressure with six adjusters
  • Available with counterweights — for precise engine balance
  • 6-bolt crankshaft pattern — zero balance, designed for Mopar 340/383/440 engines (1964–1978)
  • SFI rated and made in the USA

Kit Includes:

  • Adjustable long-style pressure plate
  • Sintered iron disc (5135 compound)
  • Billet aluminum flywheel (143T)

The McLeod Soft-Lok is the most widely trusted drag racing clutch assembly in the McLeod lineup, combining proven on-track performance with full adjustability to suit your specific power level and racing style.

Products specifications

Fits

Chrysler 300 1964-71, Town & Country 1970-77, Newport 1965-78, New Yorker 1970-78, Imperial 1966-67, 1970-75; Dodge Charger 1966-74, Challenger 1970-73, Dart 1967-73, Ramcharger 1974-78, D150 1978, W150 1978, Coronet 1965-67, 1970-76 + 47 more models

Flywheel Material

Aluminum

Disc Diameter

10.5"

Engine

1964-1999 SBC/BBC

Engine Balance

Internal Balance

Ring Gear

143 tooth

Hub Style

Solid

magento _type

simple

Magento category

Clutch Kits

magento status

1

magento tax_class_id

2

magento visibility

3

magento_atrribute_set

Clutch Kits

magento_product_web

base

magento_store

default

Make

Chrysler

Number of Discs

Single

Racing Application

Drag Racing

Spline

1" x 23

Spline

1In. x 23

Disc Diameter

10.5In.

Flywheel Included

Yes

Pilot Bushing Included

No

Make

MOPAR

Engine Balance

Internal

Flywheel Material

Billet aluminum

Pressure Plate Style

Long

Hardware Included

Yes

Quantity

Sold as a kit.

Alignment Tool Included

Yes

Counterweight Assist

Yes

Ring Gear Tooth Quantity

143-tooth

Input Spline Quantity

23

Clutch Usage

Performance

Throwout Bearing Included

No

Disc Style

Full Face

Disc Material

Sintered iron

First of all, I can not believe how fast I recieved my order, 2 DAYS! Best of all, the instructions made it easy for a non mechanic like me to install.

Quick and fast

fast shipment and was exactly what i had ordered

After seeing that Autoplicity was in good standing with the BBB and had favourable reviews reported elsewhere I placed an order on a Sunday evening. On Monday morning I already had a confirmation email and order number. On Tuesday I was notified that my order had shipped. Their price of $477 on the part I ordered was about $30 cheaper than Summit Racing, who I usually do business with, and the cost of shipping and handling was only a few dollars more. I haven't recieved the part yet but have no reason to think I won't be totally satisfied with the transaction.

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