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Kenda 120/80-19 63M K785 Millville II Motocross - Rear Tyre

SKU: EMOT-PRT-KEN-120-80-19-63M-K78-MIL-II-MOT-REA-TYR


Kenda 120/80-19 K785 Millville II Motocross Rear Tyre – Built for Power and Precision

The Kenda Millville II 120/80-19 Rear Tyre is the go-to choice for riders who demand uncompromising grip, stability, and performance in soft to intermediate terrain. With its beefy profile, enhanced tread design, and race-tested durability, this tyre dominates in high-torque conditions — whether you’re pushing a full-size 450cc MX bike or a tuned electric beast.

🏋️♂️ Weight: ~6.9 kg (15.2 lbs)

✅ This is a wide, heavy-duty rear motocross tyre, ideal for high-power platforms like the Sur-Ron Storm Bee, Ultra Bee (19" mod), or full-size 250cc–450cc MX bikes. Delivers an ultra-stable ride and massive traction on loam, ruts, and soft terrain.

 

🗝️ Key Features:

Wider Contact Patch: The 120 profile offers maximum surface grip and straight-line drive, perfect for heavy or high-horsepower machines.

Aggressive, Reversible Tread Design: Widely spaced knobs with deep lugs bite hard and clean quickly — and the directional pattern can be reversed for extended wear.

Reinforced Cornering Stability: The beefy shoulder knobs are engineered for hard-leaning confidence and corner exit grip.

Built for Abuse: Durable 4-ply bias construction resists punctures and knobs tearing under torque loads.

Soft to Intermediate Terrain Mastery: Performs best in loam, sand, and soft-packed tracks, yet remains effective when conditions start to firm up.

Race-Proven Compound: Formulated for maximum traction and consistent performance in demanding environments.

🏍️ Applications:

Motocross Racing: Ideal for full-size MX bikes and electric motocross setups that run 19" rear wheels.

High-Torque Electric Builds: Suits Sur-Ron Ultra Bee / Storm Bee mods or Alta MX platforms with enhanced torque delivery.

Loamy or Mixed Trail Riding: Gives confidence where other tyres spin, chunk, or wash out.

🛠️ Technical Table:

Specification Details
Brand Kenda
Model Millville II K785
Tyre Size 120/80-19
Position Rear
Tread Type Soft to Intermediate Terrain
Ply Rating 4-Ply
Load Capacity 63 (600 lbs / 272 kg)
Speed Rating M (81 mph / 130 km/h)
Tread Pattern Directional (Reversible)
Construction Bias-Ply
Weight 6.9 KGS / 15.2 lbs
Recommended Use Motocross, Off-Road, Trail
Traction Maximum Grip in Loam & Mud
Durability Advanced Wear & Puncture Resistance
Special Features Wide-Profile Stability & Rugged Sidewalls

🏁 Kenda K785 Millville II 120/80-19 63M Rear Tyre – Compatibility Table

Brand Model Year Range Engine Type Use Case Rear Tyre Size Rear Rim Size
Yamaha YZ450F 2003–Present 4-Stroke Motocross 120/80-19 19"
Honda CRF450R 2002–Present 4-Stroke Motocross 120/80-19 19"
Kawasaki KX450 2006–Present 4-Stroke Motocross 120/80-19 19"
KTM 450 SX-F 2007–Present 4-Stroke Motocross 120/80-19 19"
Husqvarna FC 450 2014–Present 4-Stroke Motocross 120/80-19 19"
GasGas MC 450F 2021–Present 4-Stroke Motocross 120/80-19 19"
Stark Future VARG (Performance Kit) 2023–Present Electric Motocross 120/80-19 19"
Alta Motors Redshift MXR 2016–2019 Electric Electric Motocross 120/80-19 19"
Sur-Ron Storm Bee 2022–Present Electric Off-Road / MX 120/80-19 19"
Sur-Ron Ultra Bee (mod) 2023–Present Electric Off-Road / MX 120/80-19 (mod) 19"

⚡️ Fitment with Sur-Ron & Talaria (E-Moto Specific)

Bike Model Stock Rear Tyre Rear Rim Size 120/80-19 Fitment Notes
Sur-Ron Storm Bee 100/90-19 or 110/90-19 19 x 2.15" ✅ Excellent fit Matches wide rear swingarm clearance; optimal upgrade
Sur-Ron Ultra Bee 90/90-18 (stock) 18 x 2.15" ⚠️ Requires mod Must switch to 19” rear rim; works well with 2.15–2.50"
Sur-Ron Light Bee X 80/100-19 19 x 1.6–1.85" 🚫 Not recommended Too wide; clearance issues even with fender/swingarm mods
Talaria Sting (MX3) 80/100-19 19 x 1.85" ⚠️ Tight fit May require mods for fender/suspension clearance
Talaria XXX / R 70/100-19 19 x 1.6" 🚫 Too large Will not fit without full wheel and subframe changes

🧠 How It Performs on Sur-Ron & Talaria

Strengths

  • Best-in-class grip and cornering confidence for wide-rim, high-power setups

  • Larger knobs improve drive and braking bite

  • Built tough for e-moto torque without knob chunking

  • Self-cleaning tread ideal for muddy, loamy, or rutted tracks

⚠️ Considerations

  • Heavy-duty weight = less flickable than narrower profiles

  • Taller overall height (~27”) may raise rear ride height

  • Not DOT approved (NHS) → off-road use only

 

🏁 Terrain Performance on E-Moto / MX

Surface Performance
Loam / Soft Dirt ⭐⭐⭐⭐⭐ – Elite-level grip and drive
Mud / Sand ⭐⭐⭐⭐☆ – Wide tread clears fast
Hardpack / Gravel ⭐⭐☆☆☆ – May wear fast under torque
Pavement ⭐☆☆☆☆ – Not street legal
Braking Control ⭐⭐⭐⭐☆ – Precise rear bite on soft terrain

🔧 Setup Tips

Recommended PSI:

  • 12 PSI – soft, muddy trails

  • 13–14 PSI – mixed or firmer terrain

Ideal Pairing:

  • Front Tyre: K785F Millville II 80/100-21

  • Suits riders chasing ultimate traction and aggressive handling

✅ Best For:

  • 250–450cc MX builds or electric MX with 19" rear rim

  • Sur-Ron Storm Bee or Ultra Bee mods seeking max grip

  • Riders who need cornering and launch performance on loam or muddy tracks

❌ Not Ideal For:

  • Lightweight e-bikes with narrow rims or clearance limits

  • Dual-sport or road-legal riding

  • Rocky terrain with sharp impacts

💡 Pro Tip:

This tyre transforms your ride if you're running a wide-rim Sur-Ron Storm Bee or modded Ultra Bee with torque-tuned controllers. Incredible bite under load, plus cornering control that feels locked in.

 

🏆 Dominate the Dirt:

With the Kenda 120/80-19 Millville II Rear Tyre, you're not just riding — you're gripping, climbing, and cornering with confidence. Perfect for those who leave no ruts untouched and no berm unrailed.

Order yours now from eMotoX Sports and experience next-level traction and handling!