Suspension Parts for 2021 HONDA CRF450RX Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 2021 HONDA CRF450RX. Every product in this category has been validated against year-specific fork and shock specifications to ensure true compatibility.
You’ll find fork components, shock parts, shims, upgrade kits, complete suspension systems, chassis components, and the tools and fluids required for accurate servicing - all aligned with the suspension setup of the 2021 HONDA CRF450RX.

Use this page as a reliable reference when maintaining, rebuilding, or upgrading your bike’s suspension.

Bike-Specific Suspension Specifications & Setup Information

CALCULATE SPRING RATES

This is a recommendation only please consult your manual

Ideal Fork Rate:

kg/mm ( N/mm)

Ideal Shock Rate:

kg/mm ( N/mm)

BIKE DETAILS

Bike Type

OFFROAD

Ideal Rider Weight

75 kg

Engine Specifications

4 Stroke Engine 450 cc

FORKS INFO

Fork Manufacturer

Fork Type: Showa USD 49 mm OD

Fork Dimensions

Compression Nut Torque: 24 in-lb (0.29 kgf-m)
Fork Travel: 305 mm

Fork Features

Twin Chamber Fork: Yes

Fork Oil

Fork Oil Weight: SAE 5

Fork Spring Information

Spring Rate – Claimed: 4.8N

SHOCKS INFO

Shock Manufacturer

Shock Type: SHOWA 50 mm ID

Shock Dimensions

Nitrogen Pressure: 145 psi
Shock Shaft Outer Diameter: 16 mm
Standard Sag: 40 mm
Shock Oil: 2.5 Weight

Shock Features

Non-rebuildable: No

Shock Comments

: Check rebound adjuster.

Fitment-Matched Suspension Parts by Category

CHASSIS PARTS

2 Parts

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FACTORY RACING KIT SUSPENSION

2 Parts

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FORK & SHOCK UPGRADE PACKS

3 Parts

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FORK CARTRIDGE KITS

1 Parts

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FORK REBUILD KITS

1 Parts

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FORK UPGRADE PARTS

9 Parts

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FORK SPRINGS
Ideal Fork Rate for kg: kg/mm ( N/mm)

7 Parts

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FORK CARTRIDGE ASSEMBLY PARTS

10 Parts

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FORK SEALS & BUSHES

18 Parts

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FORK COMPRESSION ADJUSTER ASSY

21 Parts

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FORK CARTRIDGE ROD PARTS

20 Parts

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FORK UPPER & LOWER TUBE PARTS

12 Parts

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FORK O-RINGS

10 Parts

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SHOCK REBUILD KITS

1 Parts

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SHOCK UPGRADE PARTS

4 Parts

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SHOCK SPRINGS
Ideal Spring Rate for kg: kg/mm ( N/mm)

3 Parts

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SHOCK SPRING RETAINERS /BUMPERS

3 Parts

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SHOCK BLADDER PARTS

7 Parts

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SHOCK SEAL CASE PARTS

21 Parts

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SHOCK SHAFT PARTS

12 Parts

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SHOCK BODY PARTS

10 Parts

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SHOCK PISTON PARTS

3 Parts

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SHOCK COMP ADJUSTER PARTS

1 Parts

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SUSPENSION LOCKNUTS & BUSHES

22 Parts

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PERFORMANCE COATINGS

5 Parts

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TOOLS & LUBRICANTS

19 Parts

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All Fitment-Matched Suspension Parts

Browse All 180 Products for HONDA CRF450RX 2021

Fork Preload Spacer 43.5 x 5.0

Teknik Motorsport

Fork Preload Spacer 43.5 x 5.0

43.5mm od x 5.0mm thick - Nylon
(SKU: 30-130-01)

$6.59
668 In Stock

Fork Preload Spacer 43.5 x 2.5

Teknik Motorsport

Fork Preload Spacer 43.5 x 2.5

43.5mm od x 2.5mm thick - Nylon
(SKU: 30-130-00)

$6.59
700 In Stock

Fork Preload Spacer 43.5 x 10.0

Teknik Motorsport

Fork Preload Spacer 43.5 x 10.0

43.5mm od x 10.0mm thick - Nylon
(SKU: 30-130-02)

$6.59
884 In Stock

M12 x 1.25 Thin Self Locking Steel Insert Fujilok

Fuji Seimitsu Co Ltd

M12 x 1.25 Thin Self Locking Steel Insert Fujilok

Self Locking Steel Insert Fujilok
(SKU: 22-625-03)

$3.99
3817 In Stock

Eibach EMS Moto Rear Shock Spring Kit 64/66.5 x 243 Showa CRF 250 450 KX450 (64_66-240)

Eibach Suspension Technology

Eibach EMS Moto Rear Shock Spring Kit 64/66.5 x 243 Showa CRF 250 450 KX450 (64_66-240)

Made in the USA (QS9000) or Germany (ISO16949)
(SKU: 881)

From $249.94

Spring Rate: 4.7 kg/mm

$249.94
2 In Stock

Spring Rate: 4.9 kg/mm

$249.94
2 In Stock

Spring Rate: 5.1 kg/mm

$249.94
2 In Stock

Spring Rate: 5.3 kg/mm

$249.94
1 In Stock

Spring Rate: 5.5 kg/mm

$249.94
1 In Stock

Spring Rate: 5.7 kg/mm

$249.94
1 In Stock

Spring Rate: 5.9 kg/mm

$249.94
Special Order

Spring Rate: 6.1 kg/mm

$249.94
2 In Stock

Spring Rate: 6.3 kg/mm

$249.94
Coming Soon

Shock Oil Seal 16 x 28 x 5 Viton Hi Performance

Capelli Race

Shock Oil Seal 16 x 28 x 5 Viton Hi Performance

16mm id x 28mm od x 5mm thick - Showa/KYB
(SKU: 22-401-00)

Oil Seal Inside Diameter d (mm): 16.0

Oil Seal Outside Ø D1 (mm): 28.0

Oil Seal Height H (mm): 5.0

$22.00
339 In Stock

Showa Genuine Parts Gas seal

Showa Genuine Parts

Showa Genuine Parts Gas seal

Showa Genuine Motorcycle Suspension Parts
(SKU: F32200001)

Inside Diameter d (mm): 12.0

Height H (mm): 6.0

Outside Ø D (mm): 25.2

$21.12
45 In Stock

Teknik Schrader Valve Cap

Teknik Motorsport

Teknik Schrader Valve Cap

(SKU: 30-652-00)

$3.99
598 In Stock

Bump Stop Rubber 16 x 55 x 58

Teknik Motorsport

Bump Stop Rubber 16 x 55 x 58

16mm id x 55mm od x 58mm tall - Showa
(SKU: 22-230-00)

Height H (mm): 58.0

Outside Ø D (mm): 55.0

$22.00
475 In Stock

Teflon Shaft Bushing - 16 x 18 x 14

Teknik Motorsport

Teflon Shaft Bushing - 16 x 18 x 14

16mm id x 18mm od x 14mm Length
(SKU: 22-076-14)

Inside Diameter d (mm): 16.0

Height H (mm): 14.0

Outside Diameter d (mm): 18.0

$2.75
987 In Stock

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