Home / Shop / Wilwood Narrow Superlite 6R Front Big Brake Kit 12.88in GT Competition Series Rotor - Black

Wilwood Narrow Superlite 6R Front Big Brake Kit 12.88in GT Competition Series Rotor - Black

SKU: WIL140-15910

Disc Brake Kits

WIL Superlite Brake Kit...

Wilwood

Wilwood Narrow Superlite 6R Front Big Brake Kit 12.88in GT Competition Series Rotor - Black

SKU: WIL140-15910

Disc Brake Kits

WIL Superlite Brake Kit...

Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

We accept

Description

Wilwood forged narrow Superlite 6R Big Brake front brake kits upgrade your late model ride with increased brake capacity and complimentary style. They're application-specific for a simpler installation and offer full compatibility with OE master cylinder output and ABS functions, where used. These front brake kits feature the extremely durable and efficient body design of their forged narrow 6-piston radial mount calipers. You can choose from optional caliper finishes and rotor designs to meet your personal style and braking requirements. Don't just replace—upgrade to generate big stopping power with Wilwood forged narrow Superlite 6R Big Brake front brake kits.

Part Type

Disc Brake Kits

Data: v4.2 - Upd: 2026-10-14 20:10:04

Specifications

Product Attributes - Brand: Wilwood Disc Brakes
Product Attributes - Manufacturer's Part Number: 140-15910
Product Attributes - Part Type: Disc Brake Kits
Product Attributes - Product Line: Wilwood Forged Narrow Superlite 6R Big Brake Front Brake Kits
Product Attributes - UPC: 889545093346
Product Attributes - Position: Front
Product Attributes - Remanufactured: No
Product Attributes - Front Rotor Included: Yes
Product Attributes - Front Rotor Style: Slotted surface
Product Attributes - Front Rotor Construction: Vented
Product Attributes - Front Rotor Diameter: 12.88 in./327.20mm
Product Attributes - Front Rotor Thickness (in.): 1.10 in.
Product Attributes - Brake Rotor Bolt Pattern (in.): Dual 5 x 4.50 in./5 x 4.75 in.
Product Attributes - Brake Rotor Bolt Pattern (mm): Dual 5 x 114.30mm/5 x 120.65mm
Product Attributes - Rear Rotor Included: No
Product Attributes - Front Caliper Included: Yes
Product Attributes - Front Caliper Piston Quantity: Six
Product Attributes - Front Caliper Material: Forged billet aluminum
Product Attributes - Front Caliper Color: Black
Product Attributes - Rear Caliper Included: No
Product Attributes - Parking Brake Provision: No
Product Attributes - Minimum Recommended Wheel Diameter (in.): 17 in.
Product Attributes - Offset (in.): 0.380 in.
Product Attributes - Front Spindles Included: No
Product Attributes - Master Cylinder Included: No
Product Attributes - Brake Booster Included: No
Product Attributes - Brake Hoses Included: No
Product Attributes - Quantity: Sold as a kit.

Reference Information

Brand Name/s	Wilwood
StreetFX SKU	wil140-15910
SFX Item ID	4407845
Supplier Item Code	4407845
Manufacturer SKU	140-15910
Manufacturer UPC	889545093346
Alternative References	12.88in

Compatibility

Application Data

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	L6
Engine Size	4.1L/250
Engine Family	GM inline 6-cylinder
Liter	4.1
CID	250
CC	4097
Drivetrain	RWD
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M
Engine VIN Code	D

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	L6
Engine Size	4.1L/250
Engine Family	GM inline 6-cylinder
Liter	4.1
CID	250
CC	4097
Application Notes	Rear BrakeType: Drum. KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR; RTR:12.88-IN DIA, GT 48 CURVED VANE, SLOTTED; CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, BLACK POWDER COAT
Engine VIN Code	D

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	L6
Engine Size	4.1L/250
Engine Family	GM inline 6-cylinder
Liter	4.1
CID	250
CC	4098
Drivetrain	RWD
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M
Engine VIN Code	D

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	L6
Engine Size	4.1L/250
Engine Family	GM inline 6-cylinder
Liter	4.1
CID	250
CC	4098
Application Notes	Rear BrakeType: Drum. KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR; RTR:12.88-IN DIA, GT 48 CURVED VANE, SLOTTED; CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, BLACK POWDER COAT
Engine VIN Code	D

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	L6
Engine Size	4.1L/250
Engine Family	GM inline 6-cylinder
Liter	4.1
CID	250
Drivetrain	RWD
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M
Engine VIN Code	D

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
CC	5733
Drivetrain	RWD
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M
Engine VIN Code	H

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
CC	5733
Drivetrain	RWD
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M
Engine VIN Code	J

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
Drivetrain	RWD
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M
Engine VIN Code	H

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
Drivetrain	RWD
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M
Engine VIN Code	J

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
Application Notes	Rear BrakeType: Drum. KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR; RTR:12.88-IN DIA, GT 48 CURVED VANE, SLOTTED; CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, BLACK POWDER COAT
Engine VIN Code	H

Make	BUICK
Model	APOLLO
Submodel	BASE
Beginning Year	1973
Ending Year	1974
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
Application Notes	Rear BrakeType: Drum. KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR; RTR:12.88-IN DIA, GT 48 CURVED VANE, SLOTTED; CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, BLACK POWDER COAT
Engine VIN Code	J

Make	BUICK
Model	GRAN SPORT
Submodel	BASE
Beginning Year	1965
Ending Year	1966
Engine Type	V8
Engine Size	6.6L/401
Engine Family	Buick V8
Liter	6.6
CID	401
CC	6572
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M

Make	BUICK
Model	GRAN SPORT
Submodel	BASE
Beginning Year	1965
Ending Year	1966
Engine Type	V8
Engine Size	6.6L/401
Engine Family	Buick V8
Liter	6.6
CID	401
CC	6572
Application Notes	Rear BrakeType: Drum. KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR; RTR:12.88-IN DIA, GT 48 CURVED VANE, SLOTTED; CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, BLACK POWDER COAT

Make	BUICK
Model	GRAN SPORT
Submodel	BASE
Beginning Year	1967
Ending Year	1967
Engine Type	V8
Engine Size	5.6L/340
Engine Family	Buick V8
Liter	5.6
CID	340
CC	5573
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M

Make	BUICK
Model	GRAN SPORT
Submodel	BASE
Beginning Year	1967
Ending Year	1967
Engine Type	V8
Engine Size	5.6L/340
Engine Family	Buick V8
Liter	5.6
CID	340
CC	5573
Application Notes	Rear BrakeType: Drum. KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR; RTR:12.88-IN DIA, GT 48 CURVED VANE, SLOTTED; CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, BLACK POWDER COAT

Make	BUICK
Model	GRAN SPORT
Submodel	BASE
Beginning Year	1967
Ending Year	1967
Engine Type	V8
Engine Size	6.6L/400
Engine Family	Buick V8
Liter	6.6
CID	400
CC	6555
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M

Make	BUICK
Model	GRAN SPORT
Submodel	BASE
Beginning Year	1967
Ending Year	1967
Engine Type	V8
Engine Size	6.6L/400
Engine Family	Buick V8
Liter	6.6
CID	400
CC	6555
Application Notes	Rear BrakeType: Drum. KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR; RTR:12.88-IN DIA, GT 48 CURVED VANE, SLOTTED; CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, BLACK POWDER COAT

Make	BUICK
Model	GS 350
Submodel	BASE
Beginning Year	1968
Ending Year	1968
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M

Make	BUICK
Model	GS 350
Submodel	BASE
Beginning Year	1968
Ending Year	1968
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M

Make	BUICK
Model	GS 350
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
CC	5733
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M

Make	BUICK
Model	GS 350
Submodel	BASE
Beginning Year	1969
Ending Year	1969
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M

Make	BUICK
Model	GS 350
Submodel	BASE
Beginning Year	1969
Ending Year	1969
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Buick V8
Liter	5.7
CID	350
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M

Make	BUICK
Model	GS 400
Submodel	BASE
Beginning Year	1968
Ending Year	1968
Engine Type	V8
Engine Size	6.6L/400
Engine Family	Buick V8
Liter	6.6
CID	400
CC	6555
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M

Make	BUICK
Model	GS 400
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Engine Size	6.6L/400
Engine Family	Buick V8
Liter	6.6
CID	400
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M

Make	BUICK
Model	GS 400
Submodel	BASE
Beginning Year	1969
Ending Year	1969
Engine Type	V8
Engine Size	6.6L/400
Engine Family	Buick V8
Liter	6.6
CID	400
CC	6555
Application Notes	KIT,FRONT,FNSL6R,AFX PRO SPINDLE,12.88 ROTOR, RTR:12.88-IN DIA,GT 48 CURVED VANE, SLOTTED , CLPR:FORGED NARROW SUPERLITE 6R, 6-PISTON, Black Powder Coat Kit Fitment Details: Position: Front Kit, Rear Brake Type: Drum, with Wilwood AFX Pro Spindle: 2 in, M