Suspension Parts for 2018 HONDA CRF450R Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 2018 HONDA CRF450R. 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 2018 HONDA CRF450R.

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

Stock Shock Spring Rate

5.6

Bike Type

MX

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
Standard Preload: 8

Shock Features

Non-rebuildable: No

Shock Comments

: Check rebound adjuster.

Fitment-Matched Suspension Parts by Category

FORK UPGRADE PARTS

15 Parts

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FORK SEALS & BUSHES

16 Parts

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FORK COMPRESSION ADJUSTER ASSY

20 Parts

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FORK CARTRIDGE ROD PARTS

16 Parts

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SHOCK SEAL CASE PARTS

20 Parts

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SUSPENSION LOCKNUTS & BUSHES

21 Parts

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TOOLS & LUBRICANTS

23 Parts

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All Fitment-Matched Suspension Parts

Browse All 216 Products for HONDA CRF450R 2018

SDI Rear Shock Lowering Stop Washer -1mm

Suspension Direct International (SDI)

SDI Rear Shock Lowering Stop Washer -1mm

(SKU: SDERCW-1)

$33.00
1 In Stock

SKF SHOWA Shock Seal Case Assembly 50 x 16 x 22

SKF Sealing

SKF SHOWA Shock Seal Case Assembly 50 x 16 x 22

50mm od x 16mm id x 22mm tall - Showa
(SKU: SH2-SHO1650)

Shock Bore Ø D (mm): 50.0

Shock Shaft Ø D (mm): 16.0

Height H (mm): 22.0

$79.95
13 In Stock

Piston rod rebound 14mm SHOWA Hard Anodised

Lainer Suspension

Piston rod rebound 14mm SHOWA Hard Anodised

Replace scratched worn damper shafts
(SKU: SHOWA49_ASTA-14)

From $140.00

Shaft Length / Height H (mm): 401.0
Outside Ø D (mm): 14.0

$140.00
21 In Stock

Shaft Length / Height H (mm): 390.0
Outside Ø D (mm): 14.0

$140.00
2 In Stock

Shaft Length / Height H (mm): 398.0
Outside Ø D (mm): 14.0

$140.00
2 In Stock

Shaft Length / Height H (mm): 395.0
Outside Ø D (mm): 14.0

$140.00
2 In Stock

Lainer Free Piston SHOWA 49 (Pair) CRF 250/450-KXF 450 RMZ 450

Lainer Suspension

Lainer Free Piston SHOWA 49 (Pair) CRF 250/450-KXF 450 RMZ 450

(SKU: SHOWA_FREE_PISTx2_40X12)

$330.00
3 In Stock

SKF Showa Fork Seal Kit 49mm (Dual Comp)

SKF Sealing

SKF Showa Fork Seal Kit 49mm (Dual Comp)

Requires 2 kits for complete fork service.
(SKU: SKF-DUAL-49S)

Colour: Green/Orange

Seal Outer Ø D (mm): 60.30

Seal Height H (mm): 10.0

Seal Wiper Outside Ø D1 (mm): 60.60

Seal Wiper Height H1 (mm): 6.0

Fork Inner Tube Ø d (mm): 49.0

$69.95
24 In Stock

SKF Fork Bushings Kit 2pcs - 1x Inner 1x Outer - SHOWA 49

SKF Sealing

SKF Fork Bushings Kit 2pcs - 1x Inner 1x Outer - SHOWA 49

Genuine SKF Fork Bush Kit
(SKU: SKF-VKWA-SHO49-A)

Fork Inner Tube Ø d (mm): 49.0

External Teflon Bushing Dimensions (mm): 48X50X20

Internal Teflon Bushing Dimensions (mm): 49X52X15

Suspension Brand: Showa

$44.95
3 In Stock

SKF 49mm Showa Fork Seal and Wiper Set

SKF Sealing

SKF 49mm Showa Fork Seal and Wiper Set

Requires 2 kits for complete fork service.
(SKU: SKF49S)

Colour: Green

Seal Outer Ø D (mm): 60.30

Seal Height H (mm): 10.0

Seal Wiper Outside Ø D1 (mm): 60.60

Seal Wiper Height H1 (mm): 6.0

Fork Inner Tube Ø d (mm): 49.0

$59.95
22 In Stock

SKF 49mm Showa Fork Seal and Wiper Set- Heavy Duty

SKF Sealing

SKF 49mm Showa Fork Seal and Wiper Set- Heavy Duty

Requires 2 kits for complete fork service.
(SKU: SKF49SHD)

Colour: Green

Seal Outer Ø D (mm): 60.30

Seal Height H (mm): 10.0

Seal Wiper Outside Ø D1 (mm): 60.60

Seal Wiper Height H1 (mm): 6.0

Fork Inner Tube Ø d (mm): 49.0

$62.94
24 In Stock

InnTeck Inner Slide Fork Bush SHOWA 49mm **can use Showa F27604901**

Innteck

InnTeck Inner Slide Fork Bush SHOWA 49mm can use Showa F27604901

SHOWA 49mm 48x50x20
(SKU: SKTE49S)

Inside Diameter d (mm): 48.0

Fork Inner Tube Ø d (mm): 49.0

Height H (mm): 20.0

Outside Ø D (mm): 50.0

Wall Thickness (mm): 1.0

$22.00
1 In Stock

Zeta Racing Rear Shock Suspension lowering Kit. 46 and 50mm KYB Showa Sachs

DRC Zeta Hardware

Zeta Racing Rear Shock Suspension lowering Kit. 46 and 50mm KYB Showa Sachs

(SKU: ZE56-322)

From $49.95

Colour: Blue
Shock Bore Ø D (mm): 46.0

$49.95
2 In Stock

Colour: Red
Shock Bore Ø D (mm): 50.0

$60.50
2 In Stock

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