Will this fit a 2005 honda crf 450r ??

I believe the stock chain for those are 520/114 so yes this should fit

Does the manufacturer specify this as suitable for x type (520xso) chains?

Xso.. is an X type chain means o-ring

Does this come with the connecting master clip?

Be aware that RK chain master links are a press-fit. Even the clip-style require a you to press the link-plate onto the connecting link pins. If you don't have a chain press tool, you can use a C-clamp and a small socket as a press. Once the link-plate is installed then put on the clip with the rounded closed end in the direction of travel.

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RK Racing Chain 520-SO-106 (520 Series) Steel 106 Link Traditional Street and Off-Road O-Ring Chain with Connecting Link

RK Racing Chain 520-SO-106 (520 Series) Steel 106 Link Traditional Street and Off-Road O-Ring Chain with Connecting Link

Product ID: 14373473

Details

Brand
RK Racing
Item Pitch
15.88
Load Capacity
7.7E+3 lbf
Material
Alloy Steel
Specification Met
ANSI B29.1

🔗6,900 lbs tensile strength

🏍️Supports up to 400cc motorcycles

🛠️Nitrite Butadiene O-ring seal

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Description

🔗 Ride Strong, Ride Smart — The Chain That Keeps You Ahead

READY TO RIDE - Includes a clip-type master link for quick, hassle-free installation.
SMOOTH EFFICIENCY - Nitrite Butadiene O-ring seals lock in lubrication, minimizing drag and maximizing horsepower.
UNMATCHED DURABILITY - Withstands an impressive 6,900 lbs tensile strength for relentless performance.
VERSATILE POWERHOUSE - Engineered for both street and off-road rides up to 400cc—your all-terrain companion.
LIGHTWEIGHT YET STRONG - Only 3.39 lbs per 100 links—optimized for agility without compromising strength.

The RK Racing Chain 520-SO-106 is a high-performance steel O-ring chain designed for low to mid-range motorcycles up to 400cc. Featuring a durable Nitrite Butadiene O-ring seal, it ensures smooth power delivery with minimal drag. Boasting a tensile strength of 6,900 lbs and a lightweight design, this chain is perfect for both street and off-road use, complete with a clip-type master link for easy installation.

Specifications

ASIN	B007A8OJX4
Best Sellers Rank	#26,167 in Automotive ( See Top 100 in Automotive ) #30 in Powersports Drive Chains
Brand	RK Racing Chain
Customer Reviews	4.6 4.6 out of 5 stars (1,479)
Date First Available	February 15, 2012
Exterior	Steel
Is Discontinued By Manufacturer	No
Item Weight	3.8 pounds
Item model number	520-SO-106
Manufacturer	RK Excel America
Manufacturer Part Number	520-SO-106
Model	520SO
Product Dimensions	10.3 x 4.8 x 1 inches

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B/.257

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Panama.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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