Dedicated Subsystem WorkbenchPlatform Gen: 2014–2020

2018 Yamaha MT-09 Suspension Hydraulics, Fork Fluids & Sag Tuner

Front fork travel, rear shock travel, spring preload, damping click baselines, and dynamic rider sag calculator for 2018 Yamaha MT-09.

Gen 2014–2020

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2014 through 2020.

Select Model Year:(Active: 2018)

2014 2015 2016 2017 2018 2019 2020

Engine

847cc

Drive

525

Cooling

Liquid-Cooled

Suspension Hydraulics, Fork Fluids & Interactive Sag Tuner

Showa • KYB • WP Standards

OEM hydraulic capacities, air-gap measurement standards, clicker baselines, and mathematical rider sag tuning.

Shop 41mm Fork Seals

Fork Architecture

Inverted USD Cartridge (41mm KYB Adjustable)

Oil Volume Per Leg

515 ml (17.4 US fl oz) per leg

OEM Fluid Specification

Yamaha Suspension Oil 01 (KYB 01M / SAE 5W)

Air-Gap Spec (Oil Level)

148 mm (5.83 in) compressed, spring removed

Fork Seal Dimensions

41 x 53 x 8/10.5 mm

Total Suspension Travel

Front: 137 mm • Rear: 130 mm

Target Rider Sag: 35 - 42 mm (26 - 31% of 137 mm travel)

Front Preload Baseline

2 turns in from full soft

Rebound Damping Baseline

1.5 turns out from fully seated

Compression Damping Baseline

Fixed internal cartridge circuit

Target Free Sag (Unladen)

20 - 25 mm

Enter 3-Point Sag Measurements (mm)

L1: Extended

L2: Static Bike

L3: In Full Gear

Suspension Sag Diagnosis & Geometry Status

Enter your extended, static, and rider measurements on the left (or select a preset) to compute exact sag percentages and spring preload recommendations.

Factory Fluid StandardDirect Spec

Maxima Racing Fork Fluid 5W (1 Liter)

Formulated with anti-foam agents and shear-stable viscosity index improvers to prevent damping fade under aggressive riding heat.

Fork & Dust Seal KitExact Stanchion Fit

All Balls Racing 41mm Fork & Dust Seal Kit

Features directional triple-lip rubber seal profile and external garter springs engineered to withstand heavy stanchion flex without weeping.

Air-Gap Tuning PhysicsBottoming Control

148 mm (5.83 in) compressed, spring removed

Trapped air column acts as a progressive spring in final 30% of stroke. Adding +5mm oil increases bottoming resistance without stiffening small bump compliance.

Recommended Maintenance Parts: Maxima Racing Fork Fluid 5W (1 Liter) • All Balls Racing 41mm Fork & Dust Seal Kit

Shop Fork Fluids Find Direct-Fit Fork Seals

Official NHTSA Safety Recalls & Technical Bulletins

2 Active Campaigns

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

The U.S. National Highway Traffic Safety Administration reports 2 safety recall campaigns associated with this platform. Independent repair shops and riders should confirm that authorized dealership warranty remedies have been applied.

NHTSA #25V248000VEHICLE SPEED CONTROL:THROTTLE:THROTTLE POSITION SENSOR (TPS)

Received: 16/04/2025▼

Defect Description

Pure Sports Distributing Inc. (Yamaha of Hawaii) is recalling certain 2022 MT-09 Tracer GT, 2021-2025 MT-09 SP, 2021-2025 MT-09, 2022-2023 and 2025 MT-10 SP, 2022-2024 MT-10 and 2022-2024 XSR900 motorcycles. The brushes inside the Throttle Position Sensor (TPS) may slide excessively due to improper ECU programming, possibly causing unstable idling or an engine stall.

Safety Hazard / Consequence

Unstable idling or an engine stall can lead to loss of control of the motorcycle, increasing the risk of an injury or crash.

Factory Remedy & Repair Action

Dealers will reprogram the engine control unit (ECU) software and replace the TPS, free of charge. Owner notification letters were mailed on May 6, 2025. Owners may contact Yamaha of Hawaii customer service at 1-808-498-8248.

Manufacturer Notes: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1- 888-275-9171), or go to www.nhtsa.gov.

NHTSA #22V130000DO NOT OPERATE / PARK OUTSIDEENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE

Received: 07/03/2022▼