Is the RT-MT800 compatible with 6-bolt hubs?

No — the RT-MT800 is Centre Lock only. If your hub uses the 6-bolt interface you need Shimano RT-MT800-S (6-bolt) or use a Centre Lock to 6-bolt adaptor.

What size rotor should I choose for trail riding?

160 mm is standard for rear and most front trail setups; 180 mm front improves braking power on steep terrain or for heavier riders (80 kg plus). 203 mm is for enduro/gravity riding or very steep descents.

Does this rotor work with Shimano BR-M8100 XT brakes?

Yes — the RT-MT800 is the matched rotor for the XT M8100 brake system and is fully compatible with XT, XTR, and SLX hydraulic disc brakes.

Shimano

Shimano Deore XT Center Lock Rotor RT-MT800

Name: Shimano Deore XT Center Lock Rotor RT-MT800
Brand: Shimano
SKU: IRTMT800LI
Price: 5250.00 INR
Availability: InStock
Author: InstaSport Editorial

₹5250.00

Description

SHIMANO DEORE XT - CENTER LOCK - Disc Brake Rotor - ICE TECHNOLOGIES FREEZA - 203/180/160/140 mm SHIMANO's DEORE XT RT-RT800 compact and lightweight disc brake rotors feature rapid heat dissipation thanks to ICE TECHNOLOGIES FREEZA heat management system. Installing and removing the rotors is quick