Dedicated Subsystem WorkbenchPlatform Gen: 2018–2026

2018 Yamaha XMAX 300 (CZR300) Tire Sizes, Cold Pressures & Gearing Ratios

OEM tire sizes, front cold PSI (), rear cold PSI (), sprocket teeth count, final drive ratio, and chain pitch for 2018 Yamaha XMAX 300 (CZR300).

Technical PassportOEM VERIFIED

Engine

292cc

Cooling

Liquid-Cooled with Front High-Efficiency Radiator & Electric Fan

Final Drive

Belt Drive

Engine Oil

1.70 L (1.80 US qt) [1.50 L periodic oil change without filter]

Spark Plug

NGK LMAR8A-9

Front Tire

120/70-15 M/C 56P

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Gen 2018–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2018 through 2026.

Select Model Year:(Active: 2018)
9 Production Years (2018–2026)

2018 2019 2020 2021 2022 2023 2024 2025 2026

Suggested Items3 Verified Workshop Consumables Available for this Job

View Suggested Items ↓

Tire Engineering & Multi-Scenario Pressure Matrix

ETRTO Validated

Inflation targets calibrated across operating modes, verified rim width ranges, and certified alternate sizes.

Shop Direct-Fit Tires

Multi-Scenario Inflation Pressures

Solo Street / CommutingCold Baseline

Front: Not Available

Rear: Not Available

Two-Up Passenger & LuggageMax Load

Front: Not Available

Rear: Not Available

Off-Highway / Terrain Pressure

Maintain OEM cold baseline for street transfers; adjust -2 to -4 PSI for loose terrain.

Rim Geometry & ETRTO Envelopes

Front Wheel

OEM Rim Width:Not Available

Permissible Envelope:Not Available

Rear Wheel

OEM Rim Width:Not Available

Permissible Envelope:Not Available

Operating outside ETRTO envelope width alters crown radius, accelerates shoulder wear, and impacts lean stability.

Factory Dimensions & Verified Alternates

Factory Standard Sizes

Front:120/70-15 M/C 56P

Rear:140/70-14 M/C 68P

Shop In-Stock Matched 2-Tire Sets→

Verified Alternate Fitments

Factory standard sizing recommended.

Alternate profiles verified for swingarm, chain guard, and fender clearances.

Final Drive Gearing & Speed/RPM Calculator

Belt Drive

Factory reduction ratios, interactive sprocket gearing simulator, 6th gear cruising RPM matrix, and swingarm chain adjustment tolerances.

Launch Full Gearing Simulator Shop Drive Belts

Drive Architecture

Poly-Chain Carbon Belt

OEM Pulleys

29T Transmission / 68T Wheel

OEM Final Ratio

2.345 : 1

Belt Teeth & Width

T • 

Cold Tension Deflection

Quick Gearing Presets

Front Transmission PulleyStock: 29T

29 Teeth

Factory teeth count

Rear Wheel Belt PulleyStock: 68T

68 Teeth

Factory teeth count

Drive Ratio & Torque Impact

Calculated Final RatioStock: 2.345

2.345 : 1

Drivetrain Torque Delta

OEM Factory Baseline Dynamics

Balanced all-around factory engineering calibrated for EPA emissions and street usability.

Countershaft Speedo Variance:0.0%

Speedometer reads true to factory calibration standards.

Cruising Engine RPM in 6th Gear

60 MPH

Stock: 3,379 RPM

3,379 RPM

70 MPH

Stock: 3,942 RPM

3,942 RPM

80 MPH

Stock: 4,505 RPM

4,505 RPM

Calculated using factory 6th gear ratio (0.923), primary reduction (1.681), and 140/70-14 M/C 68P rolling circumference.

Belt Tension & Deflection Spec

Cold Deflection Tolerance

Check tension using a 10-lb belt tension gauge at the lower belt run midpoint window on the side stand.

Belt Architecture

T • 

Recommended Belt:

Shop Belt Tension Gauges Find Direct-Fit Gearing Sets

Factory Chassis Geometry

Chassis Alignment, Drive Tension & Rear Axle Calibration

Precision workshop alignment tools, dynamic drive tension tolerances, and axle spindle calibration for the 2018 Yamaha XMAX 300 (CZR300).

Belt Drive Architecture

Secondary Belt Deflection & 10-lb Tension Calibration

FACTORY BELT DEFLECTION SPEC:

Measure cold deflection with a spring-loaded belt tension tool applying exactly 10 lbs (4.5 kg) of upward force at the lower belt run inspection window on jiffy stand.

CARBON BELT TOOTH & FLANGE INSPECTION:

T • 

Inspect polyurethane cog teeth for stone gouges or embedded gravel. Verify rear pulley chrome flanges show even belt tracking without edge fraying.

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 #ENGINE AND ENGINE COOLING:ENGINE

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Defect Description

Yamaha Motor Corporation, USA is recalling certain 2024-2025 CZR300 (XMAX 300) scooters. The camshaft retainer bolt may not have been tightened properly, which can allow the bolt to loosen and back out.

Safety Hazard / Consequence

A loose camshaft retainer bolt can cause abnormal engine noise, timing misalignment, loss of power, or engine stall while riding, increasing the risk of a crash.

Factory Remedy & Repair Action

Dealers will inspect the camshaft retainer bolt and tighten or replace it as necessary to the 10 N·m specification with threadlocker, free of charge.

Manufacturer Notes: NHTSA Campaign 25V-778; owner notifications initiated in late 2024.

NHTSA #VISIBILITY:REFLEX REFLECTOR

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OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

1 Documented Bulletin

Bulletin #FSB-YAM-XMX-01Safety Recall Bulletin FSB-YAM-XMX-01 / NHTSA 25V-778: Camshaft Retainer Bolt Security Verification, Blue Core Valve Clearances & CVT High-Torque Sheave Service

Source: Yamaha_XMAX300_NHTSA_25V778_Camshaft_Bolt_Service.pdf

Mandated Torques:Torque: 10 N·m (88 in-lb) (Camshaft Retainer Plate Hex Bolt - NHTSA 25V-778)Torque: 115 N·m (85 lb-ft) (Primary Fixed Sheave Nut)Torque: 80 N·m (59 lb-ft) (Secondary Driven Clutch Sheave Nut)Torque: 20 N·m (15 lb-ft) (Engine Oil Drain Bolt - 12mm Hex)

Consumable Specs:ThreeBond 1342 or Loctite 243 Blue ThreadlockerYamalube 4 10W-40 4-Stroke OilCylinder Head Side Cover O-Ring

Genuine Part Numbers:95812-06012-00B74-E7641-00-00B74-E7632-00-0093210-71462-00

NHTSA Safety Recall 25V-778Yamaha XMAX 300 Blue Core

Yamaha XMAX 300 Camshaft Retainer Bolt (NHTSA 25V-778) & Blue Core Top-End Architecture

Camshaft retainer bolt safety torque 10 N·m, valve lash IN: 0.08–0.12mm / EX: 0.22–0.26mm, primary sheave 115 N·m, and secondary sheave 80 N·m.

Click on Camshaft Retainer Bolt (NHTSA 25V-778), Cold Valve Lash, Primary Sheave Nut, or Secondary Sheave to view torque values and technical remedy instructions.