Products to Compare (max of 3)
X
Compare
ALWAYS SECURE
America's Oldest Speed Shop ® 800.979.0122 Lincoln, NE
Filters
Menu
Contact
Help Center
x
x
How to Contact Us

U.S.Order Line:

800.979.0122

(CST) 7am - 10pm

Race and Rod Tech Support

Mon-Fri 8am - 5pm

Canadian Order Line:

855.313.9180

International Order Line:

1.402.323.3200
Since 1952
Menu
x

Wilwood Tandem Master Cylinders, 1 Inch Bore

Free Shipping Free Shipping
Specs
Material Type:
Aluminum
Sold in Quantity:
Each
Feed:
Dual
Finish:
-
Thread Pitch:
3/8"-24
Outlet Fitting:
1/2"-20
MFG. Part #:
260-8555P
Garage Sale:
No
Centerline of Holes:
3.22
Overall Height:
4.63
Overall Width:
3.141
Mounted Length:
8.15
Bore Size:
1.00
Wilwood Tandem Master Cylinders, 1 Inch Bore
Wilwood Tandem Master Cylinders, 1 Inch Bore
Product Video
Wilwood Tandem Master Cylinders, 1 Inch Bore

Click image to enlarge

Watch the video below to learn how to install and bleed the Wilwood Master Cylinder.

Details

Reviews

Q & A

What's in the Box

Wilwood’s tandem chamber master cylinders represent the latest refinements in brake pressure actuation and fluid control. The exclusive Wilwood features incorporated in this innovative and unique new design make it the perfect choice for a wide range of custom manual or power brake applications.

Each master cylinder is configured with full separation between the front and rear reservoir chambers and fluid outlets. There is a pressure access on both sides of the piston bore for right or left hand plumbing based on mount location. A total piston stroke of 1.10” is distributed at a 2:1 volume ratio between the primary and secondary chambers.

  • High-pressure die casting of a premium alloy
  • High-capacity body
  • Lightweight, looks great, and has the durability for competition
  • Black anodized billet lid
  • Pressure balanced bellows gasket provides sealing against moisture invasion or fluid leakage
  • Mounting flange is slotted to accommodate installation on both centers between 3.22” and 3.40”
  • Simple bolt-on for many OE mounts including the popular Chrysler, Corvette, GM, and Ford Mustang

Tandem Master Cylinder Installation Instructions (PDF)

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

Item Details

1" bore
3.12" center of cylinder bore to top of unit

Notes

  1. Brake System Builder's Tip (Link)
  2. Body features two through hole mounts on 6.40” centers for side mounting to frame members or other secure elements of the chassis.
  3. Fittings included with master cylinder: (one) 1/2-20 x 9/16-18 IF tube adapter, (one) 1/2-20 x 1/2-20 IF tube adapter and (two) 1/2-20 x 3/8-24 IF tube adapters.
  4. Fabrication or modification of the pedal pushrod may be required on the 1" or 1-1/8" bore size to adapt the master cylinder to some applications. 

Specs


Customer Reviews

This product has no reviews.

Product Q&A

6 questions : 7 answers

1 answers

Will this master cyl work on a 57 chevy? I want to buy your tri-five chevy front disc brake kit with 11" rotors & 69-77 calipers. Also would you recommend a stock prop valve of a adjustable unit. I'm running non-power brakes & stock drums out back. Its a 4-wheel drum #non-power# car. Thank you. Matthew

Matt70
Detroit, MI, USA
February 20, 2013

Will this master cyl work on a 57 chevy? I want to buy your tri-five chevy front disc brake kit with 11" rotors & 69-77 calipers. Also would you recommend a stock prop valve of a adjustable unit. I'm running non-power brakes & stock drums out back. Its a 4-wheel drum #non-power# car. Thank you. Matthew

Answers

February 20, 2013
Jason
Master cylinder number 8352608555 when used with a brake conversion to disc brakes on the front normally requires an adjustable proportioning valve such as Speedway number 91031353 or a mated Wilwood under part number 8352608419. These are simply plumbed into the line going to the rear brakes and for bleeding purposes the knob is screwed in all the way for free flow and then trial and error adjusted out till the installer obtains even braking front to rear or as desired. Disc brakes require normally 1200 to 1300 psi as compared to drums needing only 600-800 psi.
1 answers

I need to rebuild mine, do you carry the kit for this model?

Novaguy
January 17, 2013

I need to rebuild mine, do you carry the kit for this model?

Answers

January 18, 2013
Jason
Wilwood does not offer a rebuild kit for this master cylinder. Wilwood does offer a factory rebuild for this, parts and labor is a $50.00 charge. When these masters were originally released Wilwood did offer the rebuild kits for them but as time went on the majority of them were damaged which was attributed to the tools and techniques use to disassemble and re-assemble, gets a bit tricky so Wilwood opted to offer this service. Simply contact Wilwood for an RMA and send it direct to them. The turnaround is generally two working days.
1 answers

"depth correction plug" mentioned in video for use with a booster.... do they come in different length's is another name for them I cant find any I am installing a master cylinder and booster in a 1953 Studebaker, I have found that the booster rod is not coming in contact with the master cylinder and is about 1 1/8" to 1 1/4" short... I saw the depth correction plug mentioned in your video and was wondering if these are available in different width's and length's... I have not been able to find anything like this anywhere, and was wondering if possibly under a different name? Or am I doomed to making one myself? Thanks for your input

Motorhead
Daytona Beach, FL, USA
December 10, 2012

"depth correction plug" mentioned in video for use with a booster.... do they come in different length's is another name for them I cant find any I am installing a master cylinder and booster in a 1953 Studebaker, I have found that the booster rod is not coming in contact with the master cylinder and is about 1 1/8" to 1 1/4" short... I saw the depth correction plug mentioned in your video and was wondering if these are available in different width's and length's... I have not been able to find anything like this anywhere, and was wondering if possibly under a different name? Or am I doomed to making one myself? Thanks for your input

Answers

December 11, 2012
Jason
The depth correction plug is commonly referred to as a piston “slug” and comes with our master cylinders that are used for both boosted and non boosted applications. They are not offered in different lengths unless by other manufacturers. On our kits the booster push rod or “spud” is adjustable to obtain the proper clearance. Space between the booster push rod and the piston is mandatory in order for the piston to come all the way back and fully release the brakes and also to allow the piston to get a full charge of fluid when applying the brakes. If you have a speedway master cylinder that is used for both manual and power brakes and did not receive the slug in the box let our customer service staff help in receiving one. Some master cylinders are NOT adaptable to both manual and power brakes and this would need to be verified.
2 answers

will this work for a dual piston caliber front disk & rear drums?

November 28, 2011

will this work for a dual piston caliber front disk & rear drums?

Answers

July 02, 2015
Eric
Expert
With front disc and rear drum the 1" bore would be recommended and it should handle the volume of the dual piston calipers. With proper regulation of front to rear pressure you should achieve sufficient braking without a booster as long as you have sufficient pedal ratio.
November 30, 2011
John
Part # 8352608555 With front disc and rear drum the 1” bore would be recommended and it should handle the volume of the dual piston calipers. With proper regulation of front to rear pressure you should achieve sufficient braking without a booster as long as you have sufficient pedal ratio.
1 answers

I,m building a Model A pickup, GM metric disc on front & rear, 5 to 1 pedal ratio, 7" single diaphram booster. I have a Wilwood master cylinder with a 1&1/8" bore that I would like to use. Will I have enough pressure or do I need a smaller bore? Joe

Jalopiejoe
Cave Creek, AZ.
January 07, 2011

I,m building a Model A pickup, GM metric disc on front & rear, 5 to 1 pedal ratio, 7" single diaphram booster. I have a Wilwood master cylinder with a 1&1/8" bore that I would like to use. Will I have enough pressure or do I need a smaller bore? Joe

Answers

January 13, 2011
Waymon
We suggest that you purchase a Willwood Tandem master cylinder, part number: 8352608555. This master cylinder has a bore size of 1 inch and will supply you with the pressure that you need.
1 answers

1/2-20 to -3AN adapter Do you offer a 1/2-20 to -3AN adapter for the Wilwood master cylinders? I hate stacking adapters if I don't have to.

phendrickson58
KS
April 08, 2015

1/2-20 to -3AN adapter Do you offer a 1/2-20 to -3AN adapter for the Wilwood master cylinders? I hate stacking adapters if I don't have to.

Answers

April 09, 2015
EricM
Yes we offer that adapter as part number 910318-1/2
Page 1 of 1

You may also be interested in:

Wilwood Tandem Master Cylinders, 1-1/8 Inch Bore
(Part #8352608556)
                        

Wilwood’s tandem chamber master cylinders represent the latest refinements in brake pressure actuation and fluid control. The exclusive Wilwood features incorporated in this innovative and unique new design make it the perfect choice for a wide range of custom manual or power brake applications.

Each master cylinder is configured with full separation between the front and rear reservoir chambers and fluid outlets. There is a pressure access on both sides of the piston bore for right or left hand plumbing based on mount location. A total piston stroke of 1.10” is distributed at a 2:1 volume ratio between the primary and secondary chambers.

Wilwood Master Cylinder Installation Instructions (PDF)

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

Item Details

1.125" bore
3.22" center of cylinder bore to top of unit
Wilwood 260-7563 Tandem Master Cylinder w/ Remote Reservoirs, 1 Inch
(Part #8352607563)
                        

Tandem remote master cylinders provide one of the safest ways to actuate four wheel or dual caliper axle brake systems. This versatile, lightweight and easily adapted master cylinder provides single pushrod activation of two separate brake fluid circuits. By completely isolating the fluid reservoirs and circuits, the front and rear brakes are able to operate independently of each other and provide a safety net should any one side of the system become inoperable. Shipped complete with the master cylinder and all necessary hardware including 30 inches of hose that can be cut to the desired length for remote mounting of the two 4 ounce fluid reservoirs. 

  • Can be bolted directly to Wilwood single mount pedals
  • 50/50 front/rear brake output from a 1.00" bore with 1.10" stroke
  • Great match for Wilwood's Bolt-On-Disc Brake Kit systems configured from OE components
  • Reservoirs can be either remote or master cylinder mounted

Tandem Remote Fill Master Cylinder Installation Instructions (PDF)

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

Wilwood 261-13270 Aluminum Tandem Master Cylinder Kit with Bracket and Valve
(Part #26113270)
                        

These Aluminum Tandem Chamber Master Cylinder kit from Wilwood comes with a Combination Proportioning Valve, mounting bracket, fluid tubes and mounting hardware. The Tandem Master Cylinder represents the latest in refinements in brake pressure actuation and fluid control. The slotted flange mounting makes it a simple bolt on for many OE mounts including the popular Chrysler, Corvette, GM, and Ford Mustang bolt patterns and is compatible with manual or power brake system applications. Master cylinders are available with a 1-1/8” bore size and they come in your choice of standard, ball burnished, or black E-coat finishes.

The combination proportioning valve substantially simplifies wiring and brake proportioning adjustments on vehicles with custom brake systems. The combination block maintains full isolation between front and rear fluid circuits and is specifically designed to accompany the Tandem Chamber Master Cylinder. The combo valve and bracket are black E-coated for a performance look and long lasting durability. Stainless steel fluid tubes are precision bent with preinstalled stainless tube nuts for a simple bolt-on installation between the Combination Proportioning Valve and the Wilwood Tandem Master Cylinder. Stainless steel button head fasteners thread into the bracket for a simple installation and years of durable, rust-free performance. Simply connect the fluid lines, bleed the system, and you're finished.

  • Bore size: 1-1/8"
  • 1.1" stroke
  • Dual tandem outlets - 1/2"-20
  • Fit size 1: 3/8"-24 IF or 1/2"-20 IF
  • Fit size 2: 3/8"-24 IF or 9/16"-18 IF
  • Integral res type
  • Aluminum
  • Choose from standard, ball burnished, or black E-coat finish

Wilwood Tandem Master Cylinder Kit Product Data Sheet (PDF)

New Product Release (PDF) 

Replacement Pushrod for Manual Master Cylinder
(Part #91631946)
                        

This replacement pushrod for manual master cylinders fits our Dual Feed Master Cylinder 910-31420.

  • Overall Length:  6"
  • Threaded Length:  5-3/8"
  • Threads:  3/8" Fine

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

Item Details

3/8" Fine thread, 5-3/8" thread length