Dedicated Subsystem WorkbenchPlatform Gen: 2021–2026

2025 Honda Rebel 1100 (CMX1100) Suspension Hydraulics, Fork Fluids & Sag Tuner

Front fork travel, rear shock travel, spring preload, damping click baselines, and dynamic rider sag calculator for 2025 Honda Rebel 1100 (CMX1100).

Technical PassportOEM VERIFIED

Engine

1084cc

Cooling

Liquid-Cooled

Final Drive

525 Chain

Engine Oil

3.90 L (4.12 US qt)

Spark Plug

NGK SILMAR8A9S

Front Tire

130/70-18

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Gen 2021–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2021 through 2026.

Select Model Year:(Active: 2025)
6 Production Years (2021–2026)

2021 2022 2023 2024 2025 2026

Suggested Items4 Verified Workshop Consumables Available for this Job

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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 Fork Seals & Wipers

Fork Architecture

Conventional Telescopic (43mm Cartridge Style)

Oil Volume Per Leg

540 ml (18.3 US fl oz) per leg

OEM Fluid Specification

Honda Ultra Cushion Oil 10W (SAE 10W)

Air-Gap Spec (Oil Level)

140 mm (5.51 in) compressed, spring removed

Fork Seal Dimensions

43 x 54 x 11 mm

Total Suspension Travel

Front: 121 mm • Rear: 95 mm

Target Rider Sag: 32 - 38 mm (26 - 31% of 121 mm travel)

Front Preload Baseline

Threaded preload caps (2 lines visible)

Rebound Damping Baseline

Factory fixed hydraulic valve

Compression Damping Baseline

Factory fixed hydraulic valve

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 10W (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 43mm 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

140 mm (5.51 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 10W (1 Liter) • All Balls Racing 43mm Fork & Dust Seal Kit

Shop Fork Fluids Find Direct-Fit Fork Seals

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

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

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 2025 Honda Rebel 1100 (CMX1100) platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

1 Documented Bulletin

Bulletin #HON-21V987Safety Recall KN1 (MTB 17798): Rebel 1100 (CMX1100) Radiator Cap Outer Hook Height Replacement

Source: Honda_Rebel1100_Recall21V987_KN1_RadiatorCap_Full.pdf

Mandated Torques:Torque: 9.8 N·m (7.2 lbf·ft) (Radiator Shroud & Neck Cover Fasteners)Torque: 1.5 N·m (1.1 lbf·ft) (Overflow Return Tube Spring Clamp Inspection)

Consumable Specs:Pro Honda HP Coolant 50/50 Prediluted (Phosphate & Silicate Free)Distilled Water Rinse Solution

Genuine Part Numbers:06190-MKR-30519045-MZ1-851

HONDA REBEL 1100 COOLING SYSTEMExploded View: Radiator Cap Sealing Interface (Safety Recall 21V-987 / KN1)

KIT # 06190-MKR-3051.1 BAR (108 kPa)

Remedy Radiator Cap (1.1 bar / 108 kPa / 16 psi)

Genuine Kit # 06190-MKR-305 (Kit, Cap Rad)

Push Down & Rotate Clockwise Until Stop Lugs Engage

CRITICAL SAFETY RECALL (Recall 21V-987 / Service Bulletin MTB 17798 / KN1). Factory die defect formed outer hook height exceeding specifications, causing the cap to ride over filler neck stops resulting in pressure loss and hot coolant spray. Replace with countermeasure cap having verified hook height.