Rock Conqueror Fat Tires 20“ x 4”

  • 20"×4"
  • 40 PSI
  • Buy a single tire
  • But tires with tubes
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Model: Rock Conqueror 9006
Size(in.): 20×4.0
ETRTO: 102-406
Tire Type: Clincher
Weight( kg. ): 2.23
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Return & Warranty

1-Month FREE Return/Exchange
1-Year FREE Exchange Instead Of Repair

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Please call +1 (669) 696-7538

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The Rock Conqueror's "Big Convex Button" was first designed and used on fat tires by Hycline. This tire faces challenging terrain directly such as rocks, forests, and mud inaccessible to ordinary tires. Hyclines Rock Conqueror is never afraid of these.

Hycline's 20x4 studded fat tire All-Terrain Folding Electric MTB Tire with Street or Trail Riding

High-strength rubber with enhanced thickness and tread quality allows for greater load-bearing capacity and puncture resistance. Oversized Convex Knobs studded tread provides excellent stability and great bite to absorb rocks, and other challenging terrain.

Hycline 26x4 Puncture-Resistant and All-Terrain Folding Fat Bike Tire
Hycline Ebike Fat Tire: 20 x 4.0/26 X 4.0 Inch E-Bike Mountain Bicycle Tire Replacement,High-Performance Puncture-Resistant and All-Terrain Folding Electric MTB Tire with Street or Trail Riding  Hycline's "Rock Conqueror" offers all-season performance, versatility for outdoor adventures. Studded buttons tread designed with a large square pattern to provide enhanced traction and durability, making it ideal for conquering challenging terrains such as rocks, forests, and mud. Not just the terrain listed in the picture. Rocks, sand, forests, mud and snow are competitors of Rock Conqueror. The Rock Conqueror's Oversized Convex Knobs tread also ensures very powerful handling performance when turning. Maintain speed and safety on soft terrain.


Tread Type: Convex Knobs 

Tire Size: 20x4.0 inch

ETRTO: 102-406 mm

T.P.I: 30TPI

Max Inflate To: 40 P.S.I 

Maximum load: 266.6 lbs (120 kg)


  Best Fat Bike Tire 20/26x4.0 - Hycline - Hycline
20x4.0 26x4.0 20 / 26x4.0 20 / 26x4.0
40 P.S.I 40 P.S.I 30 P.S.I 30 P.S.I



Hycline 26x4 Studded All-Terrain Folding MTB Tire with Street or Trail Riding

Customer Reviews

Based on 6 reviews

compared to my stock tire chao yangthis tire is thicker and a little bigger in spikes which i likeit means durableit fit 20x4 rimsusing it daily going to work

Steve Faucher
A beast of a tire

This tire is hefty. I replaced the standard off-road tires of my E bike with this one. It is probably twice the weight but more importantly the knobs are 2 to 3 times as deep and grabs wonderfully well in sand and dirt. It also has a center section of tread, which works well on the street with a minimum of sound. I love these expensive but worth it tires.I’d like to add a caution. These tires have a bigger outer diameter and you may have to adjust your fenders like I did on my 20” folding bike (ecotric dolphin)

Seems good.. nice quality thick tread.

Same as title decent tire feels like it will last.

Only for offroad!!!

Not a street tire at all. Loud heavy and slow. Ebike battery eatin up on the street.Good tread and good quality otherwise imo

Jose f.

Great tire especially when you go off road

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How do I check the shippment of my package after placing an order? After-sales service?

After you place an order, you will receive our email and tracking number. You can track the logistics information HERE. We support 30 days returns and exchanges, contact us at
or tel: 1-(669) 696-7538

What should I consider when choosing bicycle tires?

When selecting bicycle tires, consider the size, tread, width, durability, pressure, weight, and riding style. Choose a tire that fits your bike's wheels, is appropriate for the terrain you'll be riding on, is durable and puncture-resistant, can handle the recommended tire pressure, and matches your riding style.

What size bike tire do I need for my bike?

To determine the size of tire you need for your bike, you can look at the sidewall of your current wheel, which will have the tire size printed on it. The size will typically be expressed as a combination of numbers and letters, such as "700x23c" or "26x2.0". The first number refers to the diameter of the tire, which is measured in millimeters for metric sizes (e.g. 700) or inches for imperial sizes (e.g. 26). The second number refers to the width of the tire, also measured in millimeters or inches. The letter at the end indicates the type of tire (e.g. "c" for clincher)
If you're unsure about what size tires to get or have any doubts about compatibility, you can consult your bike's owner's manual or contact the manufacturer for advice.

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