40mm Part Information

New for 2021:

New Decals New design on all models
New Crowns New crown design. More options for different offsets.
New Lower Assembly New lower leg bleeders and channels. Arch design increases head tube clearance, allowing for reduced rake.
40 Name across the board 49 name goes away for 2021, 27.5" and 29" models are both called 40.
New Air Spring Air spring has been updated to a larger positive and negative air chambers.
New Damper Grip2 variable valve control (VVC) on compression and rebound.
New Grip2 E-bike tune comp valving Lighter than the standard tune for longer distance comfort.
New Mud Guard Mud guard was designed specifically to match the new lower assembly (not backwards compatible with previous 40 models. Not compatible with Marzocchi BOMBER 58).
Damper Topcap Assemblies MY21 Damper Topcap Assemblies do not include Topcap Interface Parts. Please order the appropriate Interface Parts Kit separately.

 

Maintenance:

Service Interval Full Service 125 hours
803-00-946 Kit: Dust Wiper, Forx, 40mm, Low Friction, No Flange
803-01-320 Seal Kit: MY19+ 32, 34, 36, 38, 40 GRIP Cartridge Rebuild
803-01-494 Seal Kit: 2021 F-S Grip2 BV 34/36/38/40
803-00-964 Seal Kit: 40 FLOAT NA2 Rebuild
398-00-773 Tooling: Guided Fork Seal Driver, One Piece Seal/Wiper, 40
398-00-681 32 Damper-side and ALL 32-34-36-38-40 Spring-side Removal Tool
398-00-682 34-36-38-40 Damper-side Removal Tool
803-01-324 Tooling: 2019 Clamps, Grip Damper, Body and Shaft

 

Air Spring Tuning:

234-04-726 Volume Spacer, FLOAT NA 2, 40

 

Oils:

Application Description Part
All Grip and Grip2 VVC Dampers/Damper Side Bath Oil Oil: Suspension Fluid, 5wt, Teflon Infused, 1.0 US Quart 025-03-023
NA2 Air Chamber/Float Side Bath Oil Oil: AM, FOX 20 WT Gold, T22238, 32 oz 025-03-072
Application Oil Volumes
Grip/Grip2 VVC Damper Side Bath 50cc (FOX 5wt. Teflon Infused Oil)
FLOAT NA2 Air Chamber 6cc (FOX 20wt. Gold Oil)
FLOAT NA2 Bath 35cc (FOX 20wt. Gold Oil)

 

CSUs:

Part Number Description
820-12-358-KIT Service Set: 2021, 40, Flat Upper Crown, 10mm OS, 44 Rake
820-12-360-KIT Service Set: 2021, 40, Flat Upper Crown, 14mm OS, 48 Rake
820-12-361-KIT Service Set: 2021, 40, Flat Upper Crown, 18mm OS, 52 Rake
820-12-362-KIT Service Set: 2021, 40, Flat Upper Crown, 22mm OS, 56 Rake
820-12-352-KIT Service Set: 2021, 40, Drop Upper Crown, 10mm OS, 44 Rake
820-12-353-KIT Service Set: 2021, 40, Drop Upper Crown, 14mm OS, 48 Rake
820-12-354-KIT Service Set: 2021, 40, Drop Upper Crown, 18mm OS, 52 Rake
820-12-355-KIT Service Set: 2021, 40, Drop Upper Crown, 22mm OS, 56 Rake
820-12-346-KIT Service Set: 2021, 40, Lower Crown-Steerer, 10mm OS, 44 Rake
820-12-347-KIT Service Set: 2021, 40, Lower Crown-Steerer, 14mm OS, 48 Rake
820-12-348-KIT Service Set: 2021, 40, Lower Crown-Steerer, 18mm OS, 52 Rake
820-12-349-KIT Service Set: 2021, 40, Lower Crown-Steerer, 22mm OS, 56 Rake
208-05-186 Uppertube, Kashima, MP, 2019 40 29in Butted, Air, Coil and Damper side, Dimpled
208-01-144 Uppertube, Black Ano, 2016 40 Butted, Air, Coil and Damper side, Dimpled

 

Lower Legs:

Part Number Description
820-20-139-KIT Service Set: 2021 40 29in 20x110 Boost Fox Matte Black 20mm Lower Assy
820-20-141-KIT Service Set: 2021 40 29in 20x110 Boost Fox Shiny Black 20mm Lower Assy
820-20-142-KIT Service Set: 2021 40 29in 20x110 Boost Fox Battleship Grey 20mm Lower Assy
820-20-143-KIT Service Set: 2021 40 29in 20x110 Boost Fox Shiny Orange 20mm Lower Assy
820-20-144-KIT Service Set: 2021 40 27.5in 20x110 Boost Fox Matte Black 20mm Lower Assy
820-20-146-KIT Service Set: 2021 40 27.5in 20x110 Boost Fox Shiny Black 20mm Lower Assy
820-20-147-KIT Service Set: 2021 40 27.5in 20x110 Boost Fox Battleship Grey 20mm Lower Assy
820-20-148-KIT Service Set: 2021 40 27.5in 20x110 Boost Fox Shiny Orange 20mm Lower Assy

 

Lower Leg Small Parts:

Part Description
234-04-442 2014 40 Axle Pinch Bar
241-02-151 Fastener, Custom: M5 x 18, Socket Head Cap Screw, Black 4135
290-90-162 Stamping: Axle Slit Shim, 36-40

 

Decals:

Part Description
803-01-539 Decal Kit: 2021, 40, F-S, Orange Logo, Shiny Black Fork
803-01-540 Decal Kit: 2021, 40, F-S, Black Logo, Shiny Orange Fork
803-01-541 Decal Kit: 2021, 40, F-S, Battleship Grey Logo, Battleship Grey Fork
803-01-542 Decal Kit: 2021, 40, P-SE, Gray Logo, Matte Black Fork
803-01-543 Decal Kit: 2021, 40, P-S, Gray Logo, Matte Black Fork

 

Lower Leg Subassemblies:

Part Description
820-09-067-KIT Service Set: 2021 Pressure Release Button, Lower Leg, F-S
820-00-024-KIT Service Set: 40 Axle Assembly
820-00-202-KIT Service Set: Light Disc Brake Hose Guide Parts
803-01-471 Assembly: Mud Guard, MY21 40, Black, AM

 

Complete Cartridges:

Part Number Description
820-18-128-KIT Service Set: 2019 40 27.5 & 29, FIT Grip Cart Assy Complete
820-18-337-KIT Service Set: 2021 40 203, Grip2 VVC HSR / LSR / HSC/ LSC Cart Assy Complete

 

Cartridge Topcap Assemblies:

Part Number Description
820-05-527-KIT Service Set: 2019 40 FIT Grip Damper, Topcap Assy
820-05-666-KIT Service Set: 2021 40 Grip2 VVC TPP Damper, Topcap Assy

 

Topcap Interface Parts:

Part Number  Description
820-05-528-KIT Service Set: 2019 40 FIT Grip Topcap Interface Parts
820-05-669-KIT Service Set: 2021 Grip2 VVC HSC / LSC Topcap Interface Parts
820-05-670-KIT Service Set: 2021 Grip2 VVC HSC / LSC Topcap Interface Parts, Black Ano

 

Bottom Stud Interface Parts:

Part Number  Description
820-05-518-KIT Service Set: 2019 36 Grip Bottom Stud Interface Parts
820-05-501-KIT Service Set: 2019 Grip2 HSR / LSR Bottom Stud Interface Parts

 

FLOAT NA2 Air Shaft Assemblies:

Part Number Description
820-02-581-KIT Service Set: Air Shaft Assy, 40, 203mm, FLOAT NA 2.1, +14.7cc Neg
820-02-584-KIT Service Set: Air Shaft Assy, 40, 190mm, FLOAT NA 2.1, +14.7cc Neg

 

FLOAT NA2 Topcap Assemblies:

Part Description
820-05-346-KIT Service Set: Topcap Assy, FLOAT NA 2, 40, Black

234-04-551

(T) Spring Hardware: 2014 40 FLOAT Air Topcap, Al, Blue Ano
234-04-552 (T) Spring Hardware: 2014 40 FLOAT Air Topcap, Al, Black Ano

 

FLOAT NA2 Neg Plate Subassemblies:

Part Description
820-02-330-KIT Service Set: Neg Plate Subassembly, FLOAT NA 2, 40


2021 40 GRIP2

2021 40 GRIP

2021 40 FLOAT NA2

NOTE: Parts without part numbers listed are not available individually and must be ordered as part of a complete assembly or "-KIT". Please order the "-KIT" part number listed at the bottom right corner of the drawing in which a desired individual part is shown.

2021 40 GRIP2

SELECT * FROM foxhelp_images WHERE parent = '16366' ORDER BY position
img/help/page1069-K6Q5/820-18-337-KIT-m.jpg

820-18-337-KIT 2021 40 203 GRIP2 VVC HSR/LSR/HSC/LSC CART ASSY COMPLETE


SELECT * FROM foxhelp_images WHERE parent = '16367' ORDER BY position
img/help/page1069-K6Q5/2021-40-203-GRIP2-VVC-HSR&LSR&HSC&LSC-CART-ASSY-m.jpg

2021 40 203 GRIP2 VVC HSR/LSR/HSC/LSC CART ASSY .


SELECT * FROM foxhelp_images WHERE parent = '16368' ORDER BY position
img/help/page1069-K6Q5/820-03-525-KIT-m.jpg

820-03-525-KIT 2019 Grip, All, Bearing Housing Assy


SELECT * FROM foxhelp_images WHERE parent = '16369' ORDER BY position
img/help/page1069-K6Q5/820-03-526-KIT-m.jpg

820-03-526-KIT 2019 GRIP2 REBOUND VALVING, LONG TRAVEL


SELECT * FROM foxhelp_images WHERE parent = '16370' ORDER BY position
img/help/page1069-K6Q5/820-03-654-KIT-m.jpg

820-03-654-KIT 2021 GRIP2 VVC MID VALVING


SELECT * FROM foxhelp_images WHERE parent = '16371' ORDER BY position
img/help/page1069-K6Q5/820-03-655-KIT-m.jpg

820-03-655-KIT 2021 GRIP2 VVC HSR/LSR REBOUND PISTON ASSY LONG TRAVEL


SELECT * FROM foxhelp_images WHERE parent = '16372' ORDER BY position
img/help/page1069-K6Q5/820-03-663-KIT-m.jpg

820-03-663-KIT 2021 40 203 GRIP2 VVC HSR/LSR DAMPER SHAFT ASSY


SELECT * FROM foxhelp_images WHERE parent = '16373' ORDER BY position
img/help/page1069-K6Q5/820-05-666-KIT-1-m.jpg

820-05-666-KIT 2021 40 GRIP2 VVC TPP DAMPER TOPCAP ASSY


SELECT * FROM foxhelp_images WHERE parent = '17156' ORDER BY position
img/help/page1069-K6Q5/820-03-677-KIT-m.jpg

820-03-677-KIT 2021 Grip2 VVC TTP E-Bike tune Compression Valving


SELECT * FROM foxhelp_images WHERE parent = '17157' ORDER BY position
img/help/page1069-K6Q5/820-03-660-KIT-m.jpg

820-03-660-KIT 2021 Grip2 VVC TTP Compression Valving


2021 40 GRIP

SELECT * FROM foxhelp_images WHERE parent = '16374' ORDER BY position
img/help/page1069-K6Q5/820-18-128-KIT-m.jpg

820-18-128-KIT 2019 40 27.5 & 29 FIT GRIP CART ASSY COMPLETE


SELECT * FROM foxhelp_images WHERE parent = '16375' ORDER BY position
img/help/page1069-K6Q5/2019-40-27.5-&-29-FIT-GRIP-CART-ASSY-m.jpg

2019 40 27.5 & 29 FIT GRIP CART ASSY .


SELECT * FROM foxhelp_images WHERE parent = '16376' ORDER BY position
img/help/page1069-K6Q5/820-03-330-KIT3-m.jpg

820-03-330-KIT 2017 Grip Rebound Piston Assy


SELECT * FROM foxhelp_images WHERE parent = '16377' ORDER BY position
img/help/page1069-K6Q5/820-03-331-KIT-m.jpg

820-03-331-KIT Compression Valving, Grip Damper


SELECT * FROM foxhelp_images WHERE parent = '16378' ORDER BY position
img/help/page1069-K6Q5/820-03-457-KIT3-m.jpg

820-03-457-KIT 2017 Grip Rebound Valving, Long Travel


SELECT * FROM foxhelp_images WHERE parent = '16379' ORDER BY position
img/help/page1069-K6Q5/820-03-525-KIT9-m.jpg

820-03-525-KIT 2019 Grip, All, Bearing Housing Assy


SELECT * FROM foxhelp_images WHERE parent = '16380' ORDER BY position
img/help/page1069-K6Q5/820-03-588-KIT-m.jpg

820-03-588-KIT 2019 40 203 FIT GRIP DAMPER SHAFT ASSY


SELECT * FROM foxhelp_images WHERE parent = '16381' ORDER BY position
img/help/page1069-K6Q5/820-05-527-KIT-m.jpg

820-05-527-KIT 2019 40 FIT GRIP DAMPER TOPCAP ASSY


2021 40 FLOAT NA2

SELECT * FROM foxhelp_images WHERE parent = '16382' ORDER BY position
img/help/page1069-K6Q5/2021-40-FLOAT-NA2-AIR-SPRING-ASSEMBLIES-m.jpg

2021 40 FLOAT NA2 AIR SPRING ASSEMBLIES .


SELECT * FROM foxhelp_images WHERE parent = '16383' ORDER BY position
img/help/page1069-K6Q5/2021-40-FLOAT-NA2-AIR-SHAFT-ASSEMBLIES-m.jpg

2021 40 FLOAT NA2 AIR SHAFT ASSEMBLIES .


SELECT * FROM foxhelp_images WHERE parent = '16384' ORDER BY position
img/help/page1069-K6Q5/820-02-330-KIT-m.jpg

820-02-330-KIT NEG PLATE SUBASSEMBLY FLOAT NA2 40


SELECT * FROM foxhelp_images WHERE parent = '16385' ORDER BY position
img/help/page1069-K6Q5/820-05-346-KIT-m.jpg

820-05-346-KIT TOPCAP ASSY FLOAT NA2 40 BLACK



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