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KENDAOff-RoadDirt/MX

K780 Southwick II

A sand-and-mud specialist built for desert racers and hare scrambles competitors who need instant hookup and aggressive self-cleaning in the softest conditions.

MTC8.1/10★★★★☆Off-Road · Sand & Mud Specialist
KENDA K780 Southwick II motorcycle tiremotorcycletireco.com
BrandKENDA
TypeOff-Road / Dirt/MX
FitmentFront & Rear
Sizes5
Fast-warming race compound delivers immediate traction off cement start pads without sacrificing overall knob life in soft terrain
Wide knob spacing evacuates mud and sand continuously — even at low crawling speeds — keeping the contact patch clean and biting
Large-radius knob bases anchor against roll-over when you're pinning it through soft sand sitting over firm hardpan underneath
Lightweight 4-ply casing with reinforced sidewalls handles lower running pressures without ballooning or risking pinch flats
Knob geometry prioritizes forward drive and braking bite — rewards committed throttle and decisive braking over passive riding
Five sizes from 80/100-21 front through 110/100-18 rear fit a wide range of modern off-road and dual-sport platforms
Select Size

Prices use MTC dealer formula · Load/speed index explained in the FAQ below

Fulfillment

Live pricing · Walk-in mount & balance available

🛞 Running a spoked wheel? Bridgestone Heavy Duty Tubes fit 80/100-21 — from $47
Save below MSRPIn-stock · ships fastWalk-in install
MTC Rating
MTC Score
8.1/10
★★★★☆
Built for desert racers and soft-terrain competitors who need aggressive self-cleaning traction — not a street tire by any measure.
Performance
Dry Grip8.7
Wet Grip8.9
Street Manners3.2
Track Capability8.4
Mileage7.8
Value8.6
Best For
Desert Racer
You live in the sand washes, dunes, and loamy desert terrain where traction windows are narrow and a clogged knob means a lost position. The Southwick II's wide-spaced knob pattern clears itself aggressively and the race compound hooks up hard from the moment you drop the gate — exactly what desert racing demands.
Perfect Match
Hare Scrambles Competitor
Your race days mix sandy creek beds, muddy woodland sections, and the occasional hardpack transition. The Southwick II dominates in the soft stuff where most of the race is decided, though corner grip on firm hardpack is a known trade-off. If your local series skews sandy and loose, this tire will carry you with confidence.
Great Match
Dual-Sport Adventurer
You split your miles between asphalt and dirt and need a tire that behaves on both surfaces. The Southwick II's soft-terrain focus means poor street manners, loud pavement noise, and accelerated wear on asphalt. A 50/50 tire like the Shinko 705 or Dunlop D606 will serve your riding style far better.
Consider Shinko 705 or Dunlop D606
Full Size Chart & Part Numbers
Pos.SizeLoad/SpeedP/NMFR Part #UPC-AOur Price / MSRP
Front80/100-210312-0149047802103B0$75.84$89.99Save $14
Rear100/100-180313-0251047801807B0$95.58$112.99Save $17
Rear100/90-190313-0253047801905B0$92.75$109.99Save $17
Rear110/100-180313-0252047801811B0$98.68$116.99Save $18
Rear110/90-190313-0254047801903B0$99.58$117.99Save $18
Frequently Asked
No — this tire is engineered specifically for sand and mud, and that's where it excels. The wide knob spacing that works brilliantly in soft terrain feels vague and unpredictable on firm hardpack, and wear accelerates fast on hard surfaces. If your trails mix in significant hardpack, you'll want a dedicated intermediate tire instead.
In true sand or mud conditions, most riders get roughly 8–12 hard ride sessions before the knobs start rounding noticeably. Rider weight, throttle style, and how aggressively you ride all factor in. Running it on pavement or hardpack even occasionally will cut that lifespan significantly — keep it off the street.
The Southwick II warms up quicker than most soft-terrain tires — riders typically report solid grip within the first lap. The compound is formulated to hook up from a cement start pad, which matters at motocross and hare scrambles events where you need full traction from the first pedal stroke, not the third lap.
Technically it'll mount and roll, but it's genuinely a bad idea for regular street use. The soft compound grinds away quickly on asphalt, the knob pattern creates noise and vague handling on pavement, and you'll burn through a tire in a fraction of the off-road life. Short pavement transitions between trail sections are fine — anything more, and you're wasting the tire.
Most desert riders drop to 12–14 psi in sand to spread the footprint and improve flotation — lower pressure means more knobs in contact and better forward bite. The reinforced sidewalls handle reduced pressure without excessive flex. Fine-tune from there based on your weight and whether the sand is packed or sugar-soft.
The 80/100-21 is the standard front fitment for most modern off-road bikes, and the rear lineup covers 100/100-18, 110/90-19, and 110/100-18 for the majority of rear wheel applications. Check your OEM sidewall size or owner's manual first, then call us at (714) 516-9059 if you're weighing a size change for specific terrain goals.

Kenda K780 Southwick II Tires in Orange County — MTC

Motorcycle Tire Center in Orange, CA stocks the Kenda K780 Southwick II for Southern California's desert racers, hare scrambles competitors, and off-road enthusiasts who spend their weekends in sand washes and muddy trails rather than on asphalt. Named after legendary local MX racing history, the Southwick II is a purpose-built soft-terrain tire that prioritizes self-cleaning knob design, fast compound warm-up, and the kind of forward bite that separates a clean holeshot from a buried front wheel. If your riding happens in places where the ground moves under you, this is the tire worth putting on your machine.

At MTC we carry the full Southwick II size range — from 80/100-21 fronts to 110/100-18 rears — at below-MSRP dealer pricing, and we mount and balance off-road tires in-house on a walk-in basis. Our flat-rate service pricing keeps it simple: $69 mount, $9.95 balance, and $3.50 disposal per tire. Whether you're prepping for a desert race in Johnson Valley or getting ready for a weekend in the San Gabriel Mountains, we can have you rolling with fresh rubber the same day you walk in.

Orange County riders from Irvine, Anaheim, Mission Viejo, Huntington Beach, Newport Beach, and Fullerton make MTC their go-to for off-road tire service because we know what works in local terrain and we'll tell you straight if a different tire is a better fit for how you actually ride. The Southwick II is a specialist tool — excellent in soft sand and mud, not designed for the street. Call us at (714) 516-9059 to confirm fitment for your bike or just stop by — we'll get you sorted and back on the dirt.

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