Suspension Parts for 1999 TRIUMPH Thunderbird Sport 900 Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 1999 TRIUMPH Thunderbird Sport 900. 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 1999 TRIUMPH Thunderbird Sport 900.

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

0.55

Stock Shock Spring Rate

12.3

Bike Type

CRUISER

Ideal Rider Weight

75 kg

Engine Specifications

4 Stroke Engine 885 cc

FORKS INFO

Fork Manufacturer

: KYB Conventional 43 mm OD

Fork Dimensions

Compression Nut Torque: 30 in-lb (0.35 kgf-m)
Fork Travel: 140 mm
Front Sag: 32 mm

Fork Features

Preload Adjuster: 18 mm Range

Fork Oil

Fork Oil Weight: SAE 5
Fork Oil Level: 140 mm
Oil Quanity: 2

Fork Spring Information

Standard Preload: 15 mm

Fork Comments

: Stock cartrige bushes poorly toleranced. Suggest fitting 24-711-00 bushes x2

SHOCKS INFO

Shock Manufacturer

KYB: 40 mm ID

Shock Dimensions

Nitrogen Pressure: 175 psi
Shock Length (Eye to Eye): 349 mm
Shock Travel: 65 mm
Shock Shaft Outer Diameter: 14 mm
Standard Sag: 32 mm
Shaft Nut Torque: 25 ft lbs (34 NM)
Shock Oil: 2.5 Weight

Fitment-Matched Suspension Parts by Category

FORK SEALS & BUSHES

8 Parts

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TOOLS & LUBRICANTS

8 Parts

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All Fitment-Matched Suspension Parts

Browse All 19 Products for TRIUMPH Thunderbird Sport 900 1999

Teknik Schrader Valve Cap

Teknik Motorsport

Teknik Schrader Valve Cap

(SKU: 30-652-00)

$3.99
884 In Stock

All Balls Rear Shock Seal Kit - Suzuki/Yamaha RM85/YZ80/85

All Balls

All Balls Rear Shock Seal Kit - Suzuki/Yamaha RM85/YZ80/85

14 ID 40 OD
(SKU: 37-1010)

Shock Bore Ø D (mm): 40.0

Shock Shaft Ø D (mm): 14.0

Height H (mm): 24.0

$95.00
3 In Stock

Techtool Motorcycle Fork Seal Driver Kit 9pc Kit

Techtool

Techtool Motorcycle Fork Seal Driver Kit 9pc Kit

35/36-39-41-43-45-46/47-48-49/50-54mm
(SKU: 93-009-00)

$470.58
4 In Stock

Fork Seal Driver - 43mm

Techtool

Fork Seal Driver - 43mm

See Part # 93-009-00 for complete set
(SKU: 93-009-20)

$76.95
15 In Stock

DRC Fork Seal Driver Set | Universal | 40-50mm

DRC Zeta Hardware

DRC Fork Seal Driver Set | Universal | 40-50mm

DRC Fork Seal Driver Tool Set
(SKU: D59-26-005)

$177.09
4 In Stock

DRC SHOCK SEAL HEAD INSERT KIT | KYB/SHOWA | INNER 12mm / OUTER 14/16/18mm

DRC Zeta Hardware

DRC SHOCK SEAL HEAD INSERT KIT | KYB/SHOWA | INNER 12mm / OUTER 14/16/18mm

Shock seal Bullet set -14x12 16x12 18x12
(SKU: D59-37-135)

$49.50
2 In Stock

KYB Suspension Tools Seal hammer 43mm

Kayaba (KYB) Genuine Motorcycle Parts

KYB Suspension Tools Seal hammer 43mm

Original KYB Motorcycle Suspension Tool
(SKU: 000.0652)

$128.81
Special Order

InnTeck Inner Slide Fork Bush KAYABA 43mm **can use KYB 110034300102**

Innteck

InnTeck Inner Slide Fork Bush KAYABA 43mm can use KYB 110034300102

KAYABA 43mm 42x44x20
(SKU: SKTE43K)

Inside Diameter d (mm): 42.0

Fork Inner Tube Ø d (mm): 43.0

Height H (mm): 20.0

Outside Ø D (mm): 44.0

Wall Thickness (mm): 1.0

$22.00
Nil Stock

InnTeck Outer Guide Fork Bush KAYABA 43mm **can use KYB 110044300102**

Innteck

InnTeck Outer Guide Fork Bush KAYABA 43mm can use KYB 110044300102

KAYABA 43mm 43x47x12
(SKU: SKTI43K)

Inside Diameter d (mm): 43.0

Fork Inner Tube Ø d (mm): 43.0

Height H (mm): 12.0

Outside Ø D (mm): 47.0

Wall Thickness (mm): 2.0

$22.00
Nil Stock

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