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

: 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
Oil Quanity: 2 Litres

Fork Spring Information

Spring Rate – Claimed: 4.8N

SHOCKS INFO

Shock Manufacturer

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

FORK SEALS & BUSHES

16 Parts

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FORK COMPRESSION ADJUSTER ASSY

19 Parts

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FORK CARTRIDGE ROD PARTS

14 Parts

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FORK UPPER & LOWER TUBE PARTS

10 Parts

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FORK O-RINGS

10 Parts

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SHOCK SEAL CASE PARTS

19 Parts

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SHOCK SHAFT PARTS

12 Parts

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SHOCK BODY PARTS

10 Parts

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SUSPENSION LOCKNUTS & BUSHES

21 Parts

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TOOLS & LUBRICANTS

18 Parts

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All Fitment-Matched Suspension Parts

Browse All 175 Products for HONDA CRF450RX 2021

49mm SHOWA SKF Mud Scraper

SKF Sealing

49mm SHOWA SKF Mud Scraper

Removable Scraper
(SKU: KIT-MS49S)

$55.00
1 In Stock

KoubaLink Lowering Link Honda CRF 250/450R/RX/L

KoubaLink

KoubaLink Lowering Link Honda CRF 250/450R/RX/L

Enhanced Control with Expert Engineering
(SKU: KOUBALINK-CRF17)

Colour: Red
Seat Height Change (mm): -63

$295.00
2 In Stock

Colour: Red
Seat Height Change (mm): -38

$295.00
1 In Stock

Colour: Gold
Seat Height Change (mm): -13

$295.00
2 In Stock

Colour: Red
Seat Height Change (mm): -13

$295.00
1 In Stock

Krooztune 2017-2021 Honda CRF 250/450 R/RX/RWE/X/L Adjustable Rear Lowering Link - 20/30mm

Krooztune

Krooztune 2017-2021 Honda CRF 250/450 R/RX/RWE/X/L Adjustable Rear Lowering Link - 20/30mm

Proudly made in Australia
(SKU: KT-CRF41LL30)

Seat Height Change (mm): -30

$229.96
2 In Stock

Krooztune Showa 32 Fork Piston Kit Honda CRF450R 18-24

Krooztune

Krooztune Showa 32 Fork Piston Kit Honda CRF450R 18-24

Proudly made in Australia
(SKU: KT-SHOWA32PK-H4)

$419.95
4 In Stock

Krooztune Showa 49mm Fork Cap Spanner 49mm Showa USD

Krooztune

Krooztune Showa 49mm Fork Cap Spanner 49mm Showa USD

Proudly made in Australia
(SKU: KT-SHOWA49CS)

$30.00
9 In Stock

Krooztune Supercross Spring Seat KYB 48mm / Showa 49mm

Krooztune

Krooztune Supercross Spring Seat KYB 48mm / Showa 49mm

Proudly made in Australia
(SKU: KT-SXFFSS)

Bike Type: KYB 48 (25mm cart)

$309.95
1 In Stock

Bike Type: Showa 49

$309.95

RCU PISTON BUSH 50.00x13.50x1.20mm SHOWA

K-Tech

RCU PISTON BUSH 50.00x13.50x1.20mm SHOWA

(SKU: PB-50135120)

Height H (mm): 13.5

Outside Ø D (mm): 50.0

Wall Thickness (mm): 1.20

$36.95
8 In Stock

Showa Genuine Parts Shock Piston Rod Complete. 18mm Black DLC / CRF 2017-2024

Showa Genuine Parts

Showa Genuine Parts Shock Piston Rod Complete. 18mm Black DLC / CRF 2017-2024

Showa Genuine Motorcycle Suspension Parts
(SKU: R12000005)

$1,320.00
2 In Stock

Showa Genuine Parts Piston 50/16mm

Showa Genuine Parts

Showa Genuine Parts Piston 50/16mm

Showa Genuine Motorcycle Suspension Parts
(SKU: R24005003)

$108.00
8 In Stock

Showa Genuine Parts Piston Ring 50/13mm

Showa Genuine Parts

Showa Genuine Parts Piston Ring 50/13mm

Showa Genuine Motorcycle Suspension Parts
(SKU: R25005001)

Height H (mm): 13.0

Outside Ø D (mm): 50.0

$62.40
12 In Stock

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