Giant XTC Advanced SL Carbon 7.6kg – 1x11 XTR M980/X0 – 27.5 – Small – Crossmax

 Item Description

⚖️ Weight

•Complete bike: ~8.0kg / 17.6 lbs

•Without pedals: ~7.6kg

Lighter than most carbon road bikes and dramatically lighter than typical flat-bar gravel builds (usually 10–12kg).

🚲 Overview

For sale is an exceptionally lightweight custom build based on the legendary Giant XTC Advanced SL carbon frame.

This is not a standard gravel bike. Originally a top-tier 26” XC race frame, it has been carefully re-imagined as a rigid flat-bar gravel / urban speed machine using premium, weight-optimised components throughout.

The result is a fast, responsive, ultra-light bike that excels at:

•Fast commuting

•Gravel and mixed-surface riding

•Winter training

•Riders seeking a minimalist, performance-focused flat-bar setup

🚀 Build Concept (“Restomod”)

•Rigid carbon fork for direct power transfer

•1×11 wide-range drivetrain (10–42t)

•27.5” (650b) wheels with 47c tyres

•Premium Avid X0 carbon hydraulic brakes

•Shimano XTR M980 cranks in rare 165mm length

⚙️ Component Specification

🧱 Frame & Fork

•Frame: Giant XTC Advanced SL – Advanced Grade Carbon

•Year: 2010

•Size: Small

•Original wheel size: 26”

•Current wheel size: 27.5” (conversion – see notes below)

•Condition: No cracks or structural damage; cosmetic wear only (see photos)

•Fork: Rigid carbon fork (TOSEEK, matte UD finish, cut steerer)

•Headset: Integrated bearing system (Giant top cap/spacers)

🛞 Wheels & Tyres

•Wheelset: Mavic Crossmax Elite 27.5”

•Approx. 1,635g pair

•Tubeless-ready rims, bladed spokes

•Wheels run true and smooth

•Tyres: WTB Byway 47c (650b × 47mm)

•Fast-rolling centre tread with grippy shoulders

•Skewers: Mt. Zoom ultra-light QR (red anodised, approx. 45g)

⚙️ Drivetrain (1×11)

•Crankset: Shimano XTR FC-M980

•165mm arm length (rare; excellent for clearance & biomechanics)

•Chainring: 38T narrow-wide, blue anodised (aftermarket)

•Bottom Bracket: Shimano

•Cassette: SRAM XG-1175 (10–42t)

•X1/X01-tier construction (~325g)

•Rear Derailleur: SRAM GX 11-speed (Type 2.1 clutch)

•Shifter: SRAM GX 11-speed trigger

•Chain: SRAM PC-X1 11-speed

•⚠️ Note: Brand new chain has been ordered and will be fitted prior to collection/shipping.

•If buyer requires immediate collection, the bike can be supplied with the existing chain or held for up to ~5 days until the new chain is installed.

🛑 Brakes

•Brakes: Avid X0 hydraulic disc brakes

•Carbon fibre lever blades

•Contact-point adjustment

•Flagship Avid model

•Rotors: 160mm, 6-bolt (front & rear)

🪑 Cockpit & Finishing Kit

•Handlebar: Mt. Zoom carbon flat bar (~125g)

•Note: clear-coat lacquer bubbling/peeling at centre clamp area (cosmetic – see photos)

•Stem: Easton EA70 aluminium

•Grips: Lock-on rubber grips

•Seatpost: KCNC Ti Pro Lite-8000

•Scandium alloy with titanium hardware (~165g)

•Saddle: SG Carbon Engineering

•Full carbon shell & rails (~105g)

✨ Why This Build Is Special

•7.6kg without pedals – exceptionally light for a flat-bar bike

•Rare 165mm XTR M980 cranks – ideal for smaller riders

•Avid X0 carbon brakes – lightweight, powerful, adjustable

•KCNC titanium-hardware seatpost

•Mt. Zoom carbon bar (125g)

•SG full-carbon saddle (105g)

•SRAM XG-1175 cassette (X1/X01 tier, not entry-level GX)

•New SRAM PC-X1 chain included

•Tasteful colour-matched anodised details (blue/red accents)

⚠️ Condition & Conversion Notes (Please Read)

Mechanical

•Fully functional and ride-ready

•Crisp shifting with SRAM clutch derailleur

•Wheels spin true

•Brakes provide excellent stopping power

Cosmetic

Used condition consistent with age and use:

•Frame: cable rub at head tube; paint chips near rear dropouts / brake mount

•Handlebar: lacquer peel at centre clamp (cosmetic only)

•Minor scratches and wear throughout

Wheel Conversion Details

•Frame originally designed for 26” wheels

•Currently running 27.5” (650b)

•Excellent clearance for a conversion

•~10mm+ clearance around 47c tyres (see photo with 5mm Allen key)

•Slightly raised bottom bracket improves pedal clearance

•Suitable for gravel, road, and light trail use

Setup Notes

•Front brake hose secured to fork leg with zip-tie (functional DIY solution)

•Tubeless-ready setup (valves & sealant included)

📏 Geometry & Sizing (Size Small)

•Seat tube (c-c): 390mm / 15.4”

•Effective top tube: 574mm / 22.6”

•Head tube: 120mm / 4.7”

•Chainstay: 424mm / 16.7”

•Original standover (26”): 726mm / 28.6”

•Approx. standover (27.5”): 738–745mm

•Head angle: 70.5°

•Seat angle: 73°

Recommended rider height: approx. 5’4”–5’8”, depending on preference.

📦 Sale Terms

•Sold as seen; photos form part of the description

•No returns (custom project build)

•Collection preferred: Sheffield or Marple

•Postage available at buyer’s cost and risk (bike will be carefully packed)