Now available from Percy's!

The Split Lock TM Friction Lock Fastener design uses a locking set pin built in to the bolt, When tightened the set pin expands the bolt threads against the thread wall providing an unmatched lock. The Split Lock TM Friction Lock Fastener is the only fastener that provides a locking system without using any additional wires, locking compounds, lock washers or complicated interrupters.

EASY INSTALLATION
Install the Split Lock TM as you would any other standard bolt, the only additional step needed is to simply use a high quality hex key allen wrench to tighten the set pin to lock the fastener in place. This action locks the bolt and the set pin in place so you can rest assured that the bolt will not loosen due to Vibration heat or torque dependence.

EASY REMOVAL
The Split Lock TM can be removed simply by loosening the set pin and backing out the fastener.

USE THEM TIME AND TIME AGAIN
These fasteners are made of only the finest alloys allowing the same fastener to be used over and over while providing the same locking ability time and time again.

Available in black oxide or high strength stainless, same quality stainless as found in ARP bolts. Pricing starts at $54.99 for certain black oxide kits and goes up to $139.99 for certain stainless kits. Application list below:

SPLIT-LOCK FASTENERS - HEADER BOLTS - BLACK OXIDE
20001 SB GM / BB CHRYSLER / AMC V8 QTY 12 3/8”X3/4” 12POINT
20002 BB GM / SB & BB FORD QTY 16 3/8”X¾” 12 POINT
20003 SB GM / GM V6 (2.8L) / BB CHRYSLER / AMC V8 QTY 12 3/8”X1” 12 POINT
20004 BB GM / SB & BB FORD QTY 16 3/8”X1” 12 POINT
20005 SB CHRYSLER QTY 12 5/16”X ¾” 12 POINT
20006 SB CHRYSLER 1" QTY 12 5/16”X1” 12 POINT
20007 DODGE VIPER V10 QTY 24 5/16”X1” 12 POINT
20008 GM GEN III LSX / FORD 4.0 V6 QTY 12 8MM X 25MM 12 POINT
20009 FORD 6.8L V10 QTY 24 8MM X 25MM 12 POINT
20010 FORD 4.6L 5.4L / GM 8.0L QTY 16 8MM X 25MM 12 POINT

SPLIT-LOCK FASTENERS - HEADER BOLTS - STAINLESS STEEL
21001 SB GM / BB CHRYSLER / AMC V8 QTY 12 3/8”X3/4” 12POINT
21002 BB GM / SB & BB FORD QTY 16 3/8”X¾” 12 POINT
21003 SB GM / GM V6 (2.8L) / BB CHRYSLER / AMC V8 QTY 12 3/8”X1” 12 POINT
21004 BB GM / SB & BB FORD QTY 16 3/8”X1” 12 POINT
21005 SB CHRYSLER QTY 12 5/16”X ¾” 12 POINT
21006 SB CHRYSLER 1" QTY 12 5/16”X1” 12 POINT
21007 DODGE VIPER V10 QTY 24 5/16”X1” 12 POINT
21008 GM GEN III LSX / FORD 4.0 V6 QTY 12 8MM X 25MM 12 POINT
21009 FORD 6.8L V10 QTY 24 8MM X 25MM 12 POINT
21010 FORD 4.6L 5.4L / GM 8.0L QTY 16 8MM X 25MM 12 POINT

SPLIT-LOCK FASTENERS - BLACK OXIDE - COLLECTOR BOLT KITS
20100 COLLECTOR BOLT KITS QTY 6 3/8"X 1" 12 POINT W/ NUTS

SPLIT-LOCK FASTENERS - STAINLESS STEEL - COLLECTOR BOLT KITS
21100 COLLECTOR BOLT KITS QTY 6 S.S. 3/8"X 1" 12 POINT W/ NUTS

Nice: but I still prefer the Stage Eight style that has a positive lock instead of relying on friction. No matter how tight you get them the heating cycles will work it loose over time. The only other system that prevents loose bolts is safety wiring which can be a royal pain if you have no experience and a few tools to simplify the process.

Big Dave

A Good Friend Of Mine Used Bolts Like That On His Camaro,when He Wanted To Take Them Back Off,to Repaint The Headers,he Had A Real Bad Time Geting Them Off,like They Were Stripped In Position,you Might Want To Some Sort Of Anti Seize Or Something
Don

A Good Friend Of Mine Used Bolts Like That On His Camaro,when He Wanted To Take Them Back Off,to Repaint The Headers,he Had A Real Bad Time Geting Them Off,like They Were Stripped In Position,you Might Want To Some Sort Of Anti Seize Or Something
Don
Definitely will need anti-sieze if you are using in aluminum heads to prevent galling.

Mike