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KR-1 S Front Brake Calipers Assembled
Tada! The KR-1 S brake Calipers have been refurbished. When they were purchased some of parts were missing (Both left and right Brake Pad Springs, and the four Brake Pad Spring Screws).
Powerhouse Brake Pistons
- Eight new Powerhouse stainless steel pistons were purchased
Metal Gear Sintered Pads
- A set of sintered MGear Brake Pads were purchased to go with the new MGear front Disks
A BrakeMasters repair kit was purchased
The kit included:
- Eight (8) of the thick packing seals (part 430491067 alternative)
- Eight (8) of the thinner packing seals (part 430491068 alternative)
- Two (2) Brake Breathers x2 Note: the Kawasaki KR-1S Supplement manual shows different parts for the two breathers but it was confirmed that both supplied by BRakeMasters were the same and will work fine.
- Four (4) Seal rings 6.5x11.5x2.2 (Part 430491004 alternatives)
- Two (2) Breather Caps (Part 43057003 alternatives)
- Four (4) Copper Washers
- Four (4) Brake Pad Spring Screw (Part 920091569 alternatives)
The kit also came with a small sachet of Red Rubber Grease also known as rubber assembly grease. BrakeMasters ship their kits with a small amount to save you from having to buy more than what you'd need. The grease can be applied to the rubbers and will help where swelling/hardening needs to be avoided. Without the grease and over time the packing can swell and get brittle.
For all of those part nerds like us here is the full list of parts from the exploded manual view:
- 430201089 Brake Piston(s) x8
- 430411340DK Left Calliper
- 430411341DK Right Calliper
- 43045007 Calliper Pin x2
- 430491004 Seal Ring 6.5x11.5x2.2 x4
- 430491067 Packing (thick) x8
- 430491068 Packing (thin) x8
- 43056003 Brake Breather
- 430561054 Brake Breather x2
- 43057003 Breather Cap x2
- 430821102 Brake Pad Set x2
- 920091569 Brake Pad Spring Screw x4
- 43084003 Brake Pad Circlip x2
- 921441399 Brake Pad Spring x1
- 921441400 Brake Pad Spring x1
- 921501261 Bolt 10x37 x4
- 921501272 Bolt x8
Specifications, General Information and other tips
The standard front brake pads should be between 4.3mm and 4.6mm. They should be replaced when they hit the service limit at 4.0mm (cited in section 11-4 of the KR-1S Motorcycle Service Manual Supplement).
The Front Calliper Bolts should be tightened to 20 N-m while the Calliper Spring Mounting Screws should be tightened to 2.9 N-m
Kawasaki recommend the Bleed Valves (Bleed Screws) to be pinched to 7.8 N-m however BrakeMasters suggest you ignore this recommendation as it’s likely to shear and 4 N-m should be plenty for 7mm bleeds “only turn far enough to seal – no more”
Parts Worked On:
- Front Brake
Hi David you got class man
Submitted by Lamoto63 on
Hi David you got class man the way you are doing this bike I think is going to a museum (sorry sir can't ride it ,just look at it )
Lol... it'll probably need
Submitted by Shep on
Lol... it'll probably need another cleanup after the first month of riding
Thanks for the link to this
Submitted by TerryT on
Thanks for the link to this Shep..
Greatly appreciated. I was anticipating sand blasting would be alright, however clearly a little too abrasive..Will work out the vapour blasting. Thanks again!!