Suspension Parts for 2001 YAMAHA YZ125 Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 2001 YAMAHA YZ125. 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 2001 YAMAHA YZ125.

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 Fork Spring Rate

0.41

Stock Shock Spring Rate

4.6

Bike Type

MX

Ideal Rider Weight

75 kg

Engine Specifications

2 Stroke Engine 125 cc

FORKS INFO

Fork Manufacturer

Fork Type: KYB USD 46 mm OD

Fork Dimensions

Compression Nut Torque: 48 in-lb (0.56 kgf-m)
Fork Travel: 280 mm

Fork Features

Twin Chamber Fork: No

Fork Oil

Fork Oil Weight: SAE 2.5
Fork Oil Level: 120 mm

Fork Spring Information

Standard Preload: 8 mm

SHOCKS INFO

Shock Manufacturer

Shock Type: KYB 46 mm ID

Shock Dimensions

Nitrogen Pressure: 142 psi
Shock Length (Eye to Eye): 485 mm
Shock Travel: 136 mm
Shock Shaft Outer Diameter: 16 mm
Standard Sag: 103 mm
Shaft Nut Torque: 25 ft-lbs (34 NM)
Shock Oil: 2.5 Weight
Standard Preload: 8

Shock Features

Non-rebuildable: No

Fitment-Matched Suspension Parts by Category

FORK SEALS & BUSHES

9 Parts

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FORK COMPRESSION ADJUSTER ASSY

17 Parts

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FORK O-RINGS

11 Parts

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SHOCK UPGRADE PARTS

6 Parts

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SHOCK SPRING RETAINERS /BUMPERS

7 Parts

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SHOCK BLADDER PARTS

7 Parts

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SHOCK SEAL CASE PARTS

14 Parts

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SHOCK SHAFT PARTS

16 Parts

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SHOCK BODY PARTS

13 Parts

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SHOCK PISTON PARTS

8 Parts

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SUSPENSION LOCKNUTS & BUSHES

20 Parts

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TOOLS & LUBRICANTS

31 Parts

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All Fitment-Matched Suspension Parts

Browse All 132 Products for YAMAHA YZ125 2001

Fork Bleeder Tool Set

Techtool

Fork Bleeder Tool Set

Motorcycle Suspension Tools
(SKU: 93-007-00)

$110.00
25 In Stock

Fork Seal and Wiper Set - 46 x 58 x 9.5

Kayaba (KYB) Genuine Motorcycle Parts

Fork Seal and Wiper Set - 46 x 58 x 9.5

46mm id x 58mm od x 9.5mm tall - KYB
(SKU: 24-875-00)

$44.00
30 In Stock

Fork Seal Driver - 46/47mm

Techtool

Fork Seal Driver - 46/47mm

See Part # 93-009-00 for complete set
(SKU: 93-009-40)

$76.95
14 In Stock

Front Fork Bleed Bolt Complete Gold

Kayaba (KYB) Genuine Motorcycle Parts

Front Fork Bleed Bolt Complete Gold

OEM KYB Japan Motorcycle Suspension Service Parts
(SKU: 110090000601)

$8.71
16 In Stock

Front Fork Bleed Bolt o-ring

Kayaba (KYB) Genuine Motorcycle Parts

Front Fork Bleed Bolt o-ring

OEM KYB Japan Motorcycle Suspension Service Parts
(SKU: 110100000101)

$2.24
27 In Stock

Front Fork Bush Cylinder Head 12.5mm

Kayaba (KYB) Genuine Motorcycle Parts

Front Fork Bush Cylinder Head 12.5mm

OEM KYB Japan Motorcycle Suspension Service Parts
(SKU: 110231200101)

$10.97
27 In Stock

Front Fork Dust Seals (Pair) 46mm KYB -NOK

Kayaba (KYB) Genuine Motorcycle Parts

Front Fork Dust Seals (Pair) 46mm KYB -NOK

OEM KYB Japan Motorcycle Suspension Service Parts
(SKU: 110024600202)

$51.55
11 In Stock

Front Fork Oil Seals (Pair) 46mm KYB -NOK

Kayaba (KYB) Genuine Motorcycle Parts

Front Fork Oil Seals (Pair) 46mm KYB -NOK

OEM KYB Japan Motorcycle Suspension Service Parts
(SKU: 110014600302)

$53.00
6 In Stock

Front Fork Piston Metal (Pair) 46mm KYB

Kayaba (KYB) Genuine Motorcycle Parts

Front Fork Piston Metal (Pair) 46mm KYB

OEM KYB Japan Motorcycle Suspension Service Parts
(SKU: 110034600102)

Inside Diameter d (mm): 44.5

Fork Inner Tube Ø d (mm): 46.0

Height H (mm): 20.0

Outside Ø D (mm): 46.5

Wall Thickness (mm): 1.0

$44.29
10 In Stock

Front Fork Piston Ring Rebound 32mm x 30 x 5

Kayaba (KYB) Genuine Motorcycle Parts

Front Fork Piston Ring Rebound 32mm x 30 x 5

OEM KYB Japan Motorcycle Suspension Service Parts
(SKU: 110610000401)

$14.71
5 In Stock

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