A 64:1 torque multiplier multiplies the input torque by 64. For example, 10 ft.-lbs. in equals about 640 ft.-lbs. out. If you measure torque on the output side, the wrench reads the actual output torque, you do not multiply that reading by 64.
Klutch Torque Multiplier, 1in. Drive, 3540 ft./lbs. Max.

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- High-Output Torque: Delivers up to 3,540 ft./lbs. max. for large lug nuts and heavy fasteners
- Extreme Gear Reduction: 1:64 gear ratio multiplies applied input torque with minimal effort
- Heavy-Duty Drive Size: 1in. square drive output compatible with high-capacity sockets
- Socket Set Included: Includes 4 metric sockets—21mm, 33mm, 38mm and 41mm with 78mm socket length
- Added Compatibility: Includes 21mm drive adapter and works with other 1in. drive sockets
Prop 65 Warning: See Details
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Description
Key Specs
Reviews
Q & A
Accessories
Warranty
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Product Summary
What's Included
- (1) Klutch Torque Multiplier (1) Handle (1) Extension bar (3) 1in.-drive metric sockets: 33mm, 38mm, 41mm (1) 21mm drive adapter (1) Blow-molded plastic case
Downloads
Features + Benefits
- High-Output Torque: Delivers up to 3,540 ft./lbs. max. for large lug nuts and heavy fasteners
- Extreme Gear Reduction: 1:64 gear ratio multiplies applied input torque with minimal effort
- Heavy-Duty Drive Size: 1in. square drive output compatible with high-capacity sockets
- Socket Set Included: Includes 4 metric sockets—21mm, 33mm, 38mm and 41mm with 78mm socket length
- Added Compatibility: Includes 21mm drive adapter and works with other 1in. drive sockets
- Manual Torque Solution: Provides high-torque output without relying on air or electric impact tools
- Included Storage: Includes blow-molded plastic storage case for protection and organization
Key Specs
| Attribute | Specification |
|---|---|
item# | 57483 |
Brand | Klutch |
Manufacturer's Warranty | wear item, no warranty |
Ship Weight | 20.0 LB |
Pieces (qty.) | 7 |
| Attribute | Specification |
|---|---|
Tool Length | 12.5 in |
Measurement Standard | Standard (SAE)/Metric |
Material | Cast Iron |
Torque Range | 3,540 ft-lbs. |
Storage Type | Plastic Case |
Reviews
Questions & Answers
Questions
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· 2 months ago
If the ratio is 64 to 1 movement is the torque 64 to 1? So if I put a meter on the back side and tighten the torque will be 64 to 1 also?
1 answer-
KlutchExpert12· 2 months ago
Helpful?
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· 2 years ago
How does it work? Vidios?
1 answer-
KlutchExpert12· 2 years ago
Operating instructions can be found beginning on page 6 of the Product Manual which is located on the product web page below the Product Summary. At this time, we do not have a video of this tool in use.
Helpful?
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· 2 years ago
What does the gear ratio on the torque multiplier of 1:64 actually mean
1 answer-
KlutchExpert12· 2 years ago
A 1:64 gear ration means that the handle (input) spins 64 rounds and the socket (output) will spin 1 round. It is easy to spin the handle to loosen the socket. This wrench requires little effort to reach a sufficient output torque and does not require the use of an impact wrench.
Helpful?
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· 3 years ago
can you use to tighten nuts to 1600ftlbs ?
1 answer-
KlutchExpert12· 3 years ago
This torque multiplier does not torque to a specific ft.-lb. rating; however, it has the capability to deliver up to 3,540 ft.-lbs. of torque.
Helpful?
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· 3 years ago
Can any one inch drive socket work with this tool
1 answer-
KlutchExpert29· 3 years ago
This torque multiplier can be used with other 1" drive sockets.
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· 4 years ago
Is the 21mm a 4 point or 6 point
1 answer-
KlutchExpert12· 4 years ago
The 21mm socket has 4 points.
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· 4 years ago
how is the extension used? Between the tool and socket, or tool and handle?
1 answer-
KlutchExpert12· 4 years ago
The extension bar is used between the crank handle and socket when the torque multiplier is not being used to loosen or tighten a nut. More about this can be found in the product manual, located on the product web page, on pages 6-7.
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· 5 years ago
What is the ratio on this?
1 answer-
KlutchExpert6· 5 years ago
The gear ratio on the torque multiplier is 1:64.
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· 5 years ago
where is this made?
1 answer-
KlutchExpert29· 5 years ago
This torque multiplier is manufactured in China.
Helpful?
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· 5 years ago
Can it also tighten to a desired poundage
1 answer-
KlutchExpert7· 5 years ago
It does not accurately torque to a specific ft-lbs rating.
Helpful?
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Warranty
Manufacturer's Warranty
wear item, no warranty
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Specifications
7
1
1
1
12.5 in
14.25 in
18.25 in
57 in
Standard (SAE)/Metric
Standard (SAE)
Standard (SAE)
Standard (SAE)
Cast Iron
Steel
Steel
Steel
3,540 ft-lbs.
80 ft-lbs.
-
750 ft-lbs.
Plastic Case
None
None
Case
-
3.0000 lb
4.0000 lb
27 lb
-
17.0 x 3.0 x 3.0 in
20.0 x 8.0 x 4.0 in
-
-
-
-
0.04
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