does this come with the master link?

Yes, it does come with a KMC "Missing Link", which is KMC's name for a Master Link.

Is the kmc x8.93 8 speed 7.3 mm? what's the difference between this and the kmc x8.93 6/7/8 speed chain?

The KMC X8, also known as the 8.93, works on all standard 6, 7, and 8 speed drivetrains. I have used it on all three with no problems.

Will the kmc x8.93 6,7,8-speed chain replace the 'narrow hg 40" chain i have on my novara with 8 rings in the rear? all the others say 1/8 not 3:32.

I believe it should work fine for you. From what I could find the newest narrow hg 40 chain is 7.1 mm, and this is 7.3 mm. The older hg 40 chains were the same as this chain, so it should work for you.

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X8 8-Speed X-Series High-Performance Bicycle Chain, Nickel Plate/Grey | Compatible with Shimano, SRAM, and Campagnolo 8-speed systems for MTB, road, gravel, and cyclocross riding

Product ID: 12880197

Details

Brand
KMC
Item Pitch
0.5 Inches
Load Capacity
3E+2 lbf (1334
Material
Alloy Steel
Recommended Uses For Product
Road MTB

⚡High Pin Power Riveting for durability

⚙️Double X Bridge for precision

🛡️EcoProteq & Nickel Plate coatings

31064CFA

Duties & taxes included

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚴‍♂️ Shift Faster, Ride Longer, Lead the Pack!

SEAMLESS ENGAGEMENT - Inner & outer chamfering ramps engineered for flawless interaction with chainrings and cassettes.
UNMATCHED DURABILITY - High Pin Power Riveting resists chain stretch, extending your ride miles and performance longevity.
LIGHTWEIGHT POWERHOUSE - At just 286 grams, this alloy steel chain balances strength and speed for road and MTB adventures.
ECO PERFORMANCE FRIENDLY - Choose from non-toxic EcoProteq or hardy nickel plating for corrosion resistance and style.
PRECISION SHIFTING MASTERY - Double X Bridge design delivers lightning-fast, ultra-smooth gear changes that keep you ahead of the pack.

The KMC Chain 8SP X8-Silver/Grey - X8.93 is a high-performance 8-speed bicycle chain featuring Double X Bridge construction for precise and rapid shifting, reinforced with High Pin Power Riveting to prevent stretch and extend chain life. It includes engineered chamfering ramps for smooth gear engagement and is available with eco-friendly or nickel plating coatings for corrosion resistance. Weighing 286 grams and made from durable alloy steel, it’s designed for both road and mountain biking, ensuring reliable, long-lasting drivetrain performance.

Specifications

ASIN	B001MXQHPG
Best Sellers Rank	#7,546 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #6 in Bike Chains
Brand	KMC
Brand Name	KMC
Customer Reviews	4.7 out of 5 stars 4,780 Reviews
Global Trade Identification Number	00766759708566
Included Components	Missingl link
Item Length	40.64 Inches
Item Pitch	0.5 Inches
Item Type Name	CHAIN BIKE
Item Weight	0.27 Kilograms
Load Capacity	3E+2 lbf (1334 N) working load limit
Manufacturer	KMC
Material	Alloy Steel
Material Type	Alloy Steel
Model	KMC027
Part Number	KMC027
Pitch	0.5 Inches
Recommended Uses For Product	Road, MTB
Roller Diameter	0.5 Inches
Specification Met	Corrosion Resistance, Tensile Strength
Strand Type	Single
UPC	766759708566
Unit Count	1.0 Count
Warranty Description	The product is replaced if broken or it is defective from factory

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