THIS PAIR OF C4043 REAR DROPOUTS IS CNC MACHINED IN HOUSE AT BFS. THESE DROPOUTS ARE A MODULAR SYSTEM THAT USES TWO STEEL FLANGES WITH ALUMINUM INSERTS THAT ARE BOLTED ON. THEY ARE A VERY VERSATILE DROPOUT AND CAN WORK WITH A VARIETY OF BIKE FRAME DESIGNS. WE HAVE HAD CUSTOMERS USE THEM FROM ROAD TO FULL SUSPENSION BIKE FRAMES.

FLANGES :

MACHINED FROM 1018 STEEL SO THEY CAN BE USED WITH TIG WELDING OR BRASS BRAZING

FLANGE WIDTH IS 1” WIDE TO ALLOW FOR LOTS OF PLACEMENT AREA FOR CHAIN OR SEAT STAY TIPS WITH TAPERED ENDS , AND WHEN USING LARGER DIAMETER 19MM CHAINSTAYS OR SEAT STAYS

FLANGES HAVE A 19MM RADIUS AND WILL ALLOW FOR MANY STAY ANGLES , ALLOWING FOR USE ON SMALL TO LARGE SIZED BIKE FRAMES

YOU CAN USE ISO /POST MOUNT / AND FLAT MOUNT DISK BRAKE TABS WITH THESE DROPOUTS

INSERTS:

ALUMINUM INSERTS ARE MACHINED FROM 6061 ALUMINUM AND ANODIZED BLACK- THE INSERTS USE A 12 x 1.5MM THRU-AXLE. THE HANGER LENGTH IS A STANDARD 30MM . WITH THE CORRECT AXLE LENGTH THE DROPOUTS CAN BE USED WITH A VARIETY OF HUB SPACING.

THESE DROPOUTS CAN BE USE FOR HUB WIDTHS OF 142/148/157/197

CLICK HERE TO PURCHASE AXLES

USE BFS AXLE :

TA-BFS-12B-168-1.5-15 FOR 142 HUB SPACING

TA-BFS-12B-174-1.5-15 FOR 148 HUB SPACING BOOST

TA-BFS-12B-180-1.5-15 FOR 157 HUB SPACING SUPER BOOST

TA-BFS-12B-223-1.5-15 FOR 197 HUB SPACING FAT BIKE

 THESE DROP OUTS CAN BE USED FOR MTB/FAT/GRAVEL/CYCLOCROSS/ROAD FRAMES

EST WEIGHT - 180g WITH BOLTS

SKU- FRM-DOR-C4043-12X1.5-B-WF