can gpx to 104 be used for double chainrings?

No, this is a single speed chainring spider

Does this keep the same chainline as the stock Shimano chainring?

No, it would be offset by the width of the chainring itself (maybe 3-4 mm) either to the left or right, your choice. If you are in the top gears a lot, offset to the outside. Middle gears a lot, offset to inside.

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⚡ Upgrade your drivetrain with precision and lightness — because every gram counts!

FEATHERLIGHT ADVANTAGE - Weighing only 40 grams, this adapter keeps your ride agile without compromising strength.
SEAMLESS COMPATIBILITY - Designed specifically for Shimano M6100, M7100, M8100, and M9100 direct mount cranksets with 104BCD and 110BCD standards.
COMPLETE INSTALLATION KIT INCLUDED - Comes with 4 steel bolts and a 1-year warranty—everything you need to upgrade your setup with confidence.
OPTIMIZED OFFSET FOR PERFECT CHAINLINE - 3.5mm offset ensures flawless chainring alignment, enhancing drivetrain efficiency and reducing wear.
PRECISION ENGINEERED FOR PEAK PERFORMANCE - Crafted from aerospace-grade 7075 aluminum with full CNC machining for unmatched durability and stiffness.

The DJC Bike Chainring Adapter Spider is a high-performance, lightweight adapter made from durable 7075 aluminum using CNC machining. It fits Shimano direct mount cranksets (M6100, M7100, M8100, M9100) with 104BCD and 110BCD chainrings, featuring a 3.5mm offset for optimal chainline. Weighing just 40g and including steel bolts plus a 1-year warranty, it’s engineered for serious cyclists seeking precision and reliability.

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₨1032

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Bike type	City Bike
Color	for Shimano to 104BCD
Size	normal size
Style	For Shimano to 104bcd
Material type	Aluminium
Included components	spider and bolts
Batteries included?	No
Brand	DJC Components
Department	Unisex
Manufacturer	FDKJ
Package Dimensions	20.19 x 18.39 x 1.19 cm; 82 g
ASIN	B0BC1SLGWQ

DJC Bike Chainring Adapter Spider for GXP 104BCD 110BCD M6100 M7100 M8100 M9100 for Shimano Direct Mount

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