Grand National GN4R Caliper – Part No: 120-16529
Call (805) 388-1188
Grand National GN4R
Prod #: 120-16529
Price: $729.10
Grand National GN4R - Product Summary
Caliper No: 120-16529
Grand National GN4R

Pistons
Piston Count 4
Piston Area (in²) 5.18
Piston Type Thermlock
Dust Boot No
Rotor Dimensions
Rotor Width (in) 1.25
Rotor Diameter(in) 14.00
Pad Dimensions
Pad Area (in²) 11.1
Pad Volume (in³) 6.9
Duty Rating & Material
Material Forged Aluminium
Weight(Lbs) 8.0
Colors & Finish
Color Anodize
Finish Type III Anodize

Mounting
Mount Center(in) 7.09
Mount Position
Mount Side Left Hand
Mount Type Radial
UPC Number
UPC 889545101607
Product Documents
Product Data Sheet

Installation Instructions




WARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov
Applicable to Brake Pads Only

120-16529 - Product Description

Grand National GN4R

Grand National GN4R forged aluminum four-piston radial mount calipers bring current state-of-the-art design, materials, and manufacturing technology to this long standing icon in the Wilwood caliper line. With a High-strength forged aluminum body in a hard-anodized finish and Purpose built for rotors with a 1.25” thickness and a special bracket offset. Also these calipers come with Thermlock® insulated pistons.



Product Specifications

Rotor Compatibility
Rotor Width (in) 1.25
Maximum Rotor Width (in) 1.25
Minimum Rotor Width (in) 1.19
Maximum Rotor Diameter(in) 14.00
Minimum Rotor Diameter(in) 12.19

Brake Pad Specifications
Brake Pad Type 1 7520
Brake Pad Type 2 N-A
Brake Pad Type 3 N-A
Total Pad Area (in²) 11.1
Total Pad Volume (in³) 6.9
Mount
Piston Specifications
Piston 1 Bore (in) 1.88
Piston 2 Bore (in) 1.75
Piston 3 Bore (in)
Total Piston Area (in²) 5.18

Mounting Specifications
Mount Type Radial
Mount Side Left Hand
Mount Center(in) 7.09
Mount Hole Size(in) 0.45
Mount Height(in) 2.33
Inlet Thread Size 1/8-27 NPT
Pad Dimensions & Part Numbers
Pad Dimensions for the Grand National GN4R Pad Dimensions for the Grand National GN4R Zoom Image
Axle Set P/N
Pad Type
Compound
Non-Bedded Pads - by Compounds
150-20-7520K
7520
BP-20
150-28-7520K
7520
BP-28
150-14774K
7520
BP-30
150-35-7520K
7520
BP-35
150-12246K
7520
BP-40
15B-3993K
7520
PolyMatrix B
15E-6101K
7520
PolyMatrix E
150-TX1-7520K
7520
TX1
Bedded-In Pads - by Compounds
150-12246K-B
7520
BP-40
15A-5736K-B
7520
PolyMatrix A
15B-3993K-B
7520
PolyMatrix B
Mount Dimensions for the Grand National GN4R Mount Dimensions for the Grand National GN4R Zoom Image
Mount Dimensions & Part Numbers

Dimensions for the Grand National GN4R Dimensions for the Grand National GN4R Zoom Image

Additional Notes


Parts & Accessories

O-Ring Kit 130-2427
Replacement Dust Boot N-A
Replacement Piston 1 200-7550
Replacement Piston 2 200-7551
Replacement Piston 3 N-A
Replacement Piston 4 N-A
Cross-Over O-Ring Kit 130-10540
Bridge Bolt Kit N-A
Wear Plate L/H 300-5922
Wear Plate R/H 300-5923
Pad Retainer N-A
Bleed Screw Kit 220-0627
Self Bleeder Tube N-A
Cross-Over Tube N-A
Products commonly used with this item:




$3.39
More Details





Additional related products:




More Details
More Details





 
All images shown are for illustrative purposes only. Actual product received may be different than what is portrayed on the web site.
Wilwood makes every effort to maintain our web site to ensure the accuracy of prices and product information. However, product information and prices are subject to change without notice. Please call (805) 388-1188 before ordering to verify current prices and product information.
     Copyright ©2021 Wilwood Engineering, Inc. - All Rights Reserved     
Version: 3.05 June 23, 2023