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800.979.0122

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Wilwood 260-1304 Integral Reservoir Alum. Master Cylinder, 3/4 In Bore

SAME DAY SHIPPING! Order within the next 8 hours 29 minutes and receive same day shipping

Specs
Material Type:
Aluminum
Sold in Quantity:
Each
Finish:
Natural
Reservoir Type:
Integral
Outlet Fitting:
3/8"-24 IF
Outlet Fit :
3/8-24 IF Female
Outlets:
1
Centerline of Holes:
2.25
Overall Height:
4375
Overall Length:
8.000
Outlet Size:
3/8-24
Mounted Length:
4.125
Bore Size:
3/4"
Stroke:
1.4
Flange to End :
3.91"
Area:
0.44
Capacity:
1.4
Volume:
0.61
Notes
Pushrod has 5/16"-24 threads.
Wilwood 260-1304 Integral Reservoir Alum. Master Cylinder, 3/4 In Bore
Wilwood 260-1304 Integral Reservoir Alum. Master Cylinder, 3/4 In Bore
Wilwood 260-1304 Integral Reservoir Alum. Master Cylinder, 3/4 In Bore

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

This popular, lightweight, compact design is used for clutch and small master cylinder requirements and is well known for its dependability. It incorporates an improved plastic screw-on filler cap which protects the fluid in the 1.4 ounce reservoir.

  • Includes fitting to accept 3/8"-24 inverted flare from 3/16" hard line
  • If AN-3 or AN-4 flex line is to be used, the following adapters will work:
    • 910318-3/8  (3/8"-24 to AN-3 Male Brake Fitting)
    • 6174030  (3/8"-24 Inverted Flare to AN-4 Fitting)

External Dimensions (Link)

Learn more about selecting the proper master cylinder for your vehicle by reading our tech article. Brake System Selection

Application

  • 3/8"x24 IF outlet (remove adapter fitting and it is AN3)
  • Face of mounting flange to end of housing is 3-15/16”
  • Lid protrudes another 3/16”
  • Overall length from mounting surface to outmost edge of lid is 4-1/8”
  • Overall height of housing and lid is 3-3/8”
  • Lower mounting flange extends below housing 7/8”
  • Overall height from base of flange to top of lid is 4-1/4”
  • From mounting flange to end of threaded pushrod is 3-7/8”

Specs

  • 3/8"x24 IF outlet (remove adapter fitting and it is AN3)
  • Face of mounting flange to end of housing is 3-15/16”
  • Lid protrudes another 3/16”
  • Overall length from mounting surface to outmost edge of lid is 4-1/8”
  • Overall height of housing and lid is 3-3/8”
  • Lower mounting flange extends below housing 7/8”
  • Overall height from base of flange to top of lid is 4-1/4”
  • From mounting flange to end of threaded pushrod is 3-7/8”

Customer Reviews

Rated 4.3 out of 5 by 12 reviewers.
RATING BREAKDOWN
12 reviews
5 Stars
6
4 Stars
4
3 Stars
2
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

Del
Verified Purchaser
Cedar Rapids, IA

Great Master Cylinder

July 17, 2015
Continually amazed by how great Speedway Motors service is.
Pros:
  • Works perfectly
Cons:
  • Nothing
Yes, I recommend this product.
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FreeFagan
Verified Purchaser
Topeka, Kansas

Perfect for Dune Buggies

June 17, 2015
I used this on my Dune buggy with a 65 Chevorlet Corvair and works perfect! Locks my 33s right up with just half pedal!
Pros:
  • Put On My Dune Buggy
  • Perfect For My Dune Buggy
  • Works Great
Yes, I recommend this product.
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hank
Verified Purchaser
zanesville oh

product was as descibed

June 12, 2015
product support from wildwood engineering dept. was very poor.
No, I would not recommend this product.
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cu440da
Verified Purchaser
Verified Reviewer
MN

its a master cyl

May 25, 2015
Mounting template would have been nice to have included. Other than that, it is what it is. Nice feature is the direct thread -AN port, but has brake line adapter as well.
Pros:
  • Compact
  • No -an Adapter Needed
Cons:
  • Template Would Be Nice To
  • Template Would Be Helpful
Yes, I recommend this product.
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RonP
Verified Purchaser
Illinois

Compact design

April 07, 2015
Application: '65 Mustang with Centerforce clutch assy. My intent is to replace the unsightly aftermarket cable clutch operation with hydraulics. Good overall design but the top mounting bolt hole is too close to the angled outlet fitting of the M/C. A mounting bolt of more than about 1-1/4" length is tough to put in the top hole! NOTE TO BUYERS: Replace the provided fitting with a male 3AN coupling fitting - unless you are using hard line for plumbing. (Who does that?) And watch the mounting bolt length.
Pros:
  • clean design
Cons:
  • provide current fitting and 3-an fitting with m/c.
Yes, I recommend this product.
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Tigeryan
Verified Purchaser
Littleton Co.

working Great

October 08, 2014
This worked perfectly on my V8 454 Trike Im Building And they sent it pronto helped make things little faster. Thanks again.
Yes, I recommend this product.
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bm167
Varna,IL

Saginaw 4 speed, 3/4" bore is too small

December 14, 2012
The 3/4 bore will not give you enough travel for the clutch to disengage. Use a master cylinder with a 7/8" bore for the correct travel on a Saginaw 4 speed, you'll probably have the same problem with a 3 speed. I've had this tranny in and out 8-10 times trying to figure out why the clutch would not disengage and allow the tranny to shift. The gears never did grind and not matter if the clutch was in or out, the tranny would operate.
Pros:
  • i can't think of one....
Cons:
  • speedway's system allows you to order parts that d
No, I would not recommend this product.
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marchelliomaan
Verified Purchaser

Great product, great price!

October 20, 2012
i used this new master cylinder as a clutch master on my '65 volvo 122, and the thing is flawless, loving every minute of it! thanks speedway for offering a great product at a great price. booooyah!
Yes, I recommend this product.
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Gaines "Metro-Man"
Verified Purchaser
Jefferson, TX

Fits my Metroploitan exactly!

October 08, 2011
Wilwood is a well-known brand and I replaced a factory original British part (Girling). It was a perfect fit! It's been on the car now for about a month and everything works fine. I will definitely buy this part again, and tell my fellow Metropolitan enthusiasts to use these as well. I did shop around and Speedway had the best prices and shipping.
Pros:
  • Exact replacement
  • Lightweight
  • Easy To Install
Yes, I recommend this product.
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Gaines "Metro-Man"
Verified Purchaser
Jefferson, TX

Fits my Metroploitan exactly!

October 08, 2011
Wilwood is a well-known brand and I replaced a factory original British part (Girling). It was a perfect fit! It's been on the car now for about a month and everything works fine. I will definitely buy this part again, and tell my fellow Metropolitan enthusiasts to use these as well. I did shop around and Speedway had the best prices and shipping.
Pros:
  • Easy To Install
  • Lightweight
  • Exact replacement
Yes, I recommend this product.
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Page 1 of 2

Product Q&A

5 questions : 5 answers

1 answers

Does this master cylinder have enough volume and pressure to operate an external slave on an LT 1-T56 transmission

57ChevyMan
September 30, 2014

Does this master cylinder have enough volume and pressure to operate an external slave on an LT 1-T56 transmission

Answers

October 01, 2014
EricM
This is a 3/4" bore master cylinder. We do not have the exact specs of the slave cylinder that you mention but more than likely this master cylinder would be able to operate it.
1 answers

Can this push a 1" bore slave out of a 91 IROC w/a T-5 Have a 74 Datsun 260 Z w/a Chev 350 and a 91 WC T5 with a 1" bore Chev. slave out of a 91 Camaro IROC-Z.. The Datsun 5/8 master will not push it far enough to disengage clutch.. Will this master push the slave 1" to disengage clutch??..

Gearmaster
June 22, 2013

Can this push a 1" bore slave out of a 91 IROC w/a T-5 Have a 74 Datsun 260 Z w/a Chev 350 and a 91 WC T5 with a 1" bore Chev. slave out of a 91 Camaro IROC-Z.. The Datsun 5/8 master will not push it far enough to disengage clutch.. Will this master push the slave 1" to disengage clutch??..

Answers

June 25, 2013
Jason
The Wilwood number 8352601304 is a ¾ bore master cylinder and in many cases will supply the needed volume for full clutch release but still is only 1/8” larger in bore size than your existing master cylinder. We offer more compact master cylinders such as number 835260103 which is available in 1” bore or also 70174 which is also available in the 1” bore size.
1 answers

Is there a rebuild kit for this item. Just bought one last year and it leaks down.

June 16, 2011

Is there a rebuild kit for this item. Just bought one last year and it leaks down.

Answers

June 17, 2011
Jason
Sorry, Wilwood does not offer a rebuild kit for this item. If part is less than a year old please contact customer service department at 800-979-0122
1 answers

Is this master cylinder reservior sufficient for the push type slave cylinder (item # 91025605)? Thanks

Joe
NJ
January 07, 2011

Is this master cylinder reservior sufficient for the push type slave cylinder (item # 91025605)? Thanks

Answers

January 11, 2011
Tom
Yes, our Master Cylinder part number: 8352601304, 3/4" bore, 1.4" stroke, will work with the Push Type Slave, 7/8" bore, 1.250 travel, part number: 91025605.
1 answers

I have one in my 36chevy pickup and the slanted toeboard ( floor)does not allow for full pedal travel.Is there anyway to lengthen the pushrod?

bob
fla.
August 11, 2015

I have one in my 36chevy pickup and the slanted toeboard ( floor)does not allow for full pedal travel.Is there anyway to lengthen the pushrod?

Answers

August 12, 2015
Eric
Expert
Sorry we do not offer a longer pushrod or a push rod extension. You may want to remove the pushrod and lengthen it or make an extension out of a piece of 5/16" all thread and a coupling nut.
Page 1 of 1

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