FlexStack™ — Dual Bottle BTA Mount

Name: AeroTriad FlexStack™ — Dual Bottle BTA Mount - FlexStack™ — Dual Bottle BTA Mount
Brand: AeroTriad
SKU: 51647116673363
Price: 121.0 USD
Availability: InStock
Rating: 5 (7 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$121.00

Quantity

Color

Black

Quantity

The FlexStack™ is a dual-bottle BTA mount designed to maximize hydration capacity in ultra-triathlon and long-distance racing, with two bottles in full aero position.
Universal Compatibility

Standard 64mm bolt spacing — compatible with all BTA mounts
Modular mounting — use without base plate or stack 1 to 4 AeroTriad BTA base plates

5.0

8 ratings

エアロで丈夫でカッコいいです。トレック　スピードコンセプトG3純正ハンドルにつけていますが、問題なく取り付けできました。使い勝手も良いです。ありがとうございました。

Anonyme · August 25, 2026

Très belle pièce et efficace. Le rapport qualité/prix validé. Le problème pour moi c'est le poids.

Thierry · August 13, 2026

Monté sur support Trek Speedconcept

Maxime · April 15, 2026

Returns accepted within 14 days

Exclusions may apply. See full policy

AeroTriad

4.4 (89)

Product description loading

This is the product description text that will appear here.

AeroTriad

BasePlate — BTA Mount Plate

(3)

$58.00

AeroTriad

BTA Adjust™ — Adjustable BTA Mount

(3)

$69.00

AeroTriad

TwinForce™ — Dual Bottle BTS Extension

$58.00

6% off

EZ Gains

BTA TriRig Hydra Carbon Aero Full System

(1)

$403.00$431.00

EZ Gains

BTA Spacer Kit

(1)

$68.00

Exclusive offer available

Arvada Triathlon Company

Hydra Bottle Translucent White

$150.00

Exclusive offer available

UrbanCycling.com

BTA Bottle Mount Riser

$75.00

TriRig

4.8

(224)

Kappa Carbon Saddle Bottle Cage – TriRig

6% off

EZ Gains

Signature Open Back Arm Cups: Aero Comfort Made Simple

$196.00$209.00

AeroGain

Single bottle BTA system with High-sided armrests

$251.00

Exclusive offer available

UrbanCycling.com

Hydra Carbon Aero Bottle

$150.00

Vision TriMax Rear Hydration System Aero Mounting Dual Bottle Setup Triathlon Use – BLK

Exclusive offer available

Gio's Outdoors

Vision TriMax Rear Hydration System Aero Mounting Dual Bottle Setup Triathlon Use – BLK

$104.00

EZ Gains

Gorilla XT Bottle Cage Matt Black

(5)

$95.00

3DC Aero

JCOB Type 5 Saddle Rear Dual Bottle Mount

$49.99

Intune Aero

Giant Trinity TT 2016-2024 BTA Hydration System

$107.00

AeroBlade™ BTS : Hydration. Aero. Adjustable.

AeroTriad

AeroBlade™ — Dual Rear Bottle Mount BTS

(4)

$104.00

AeroTriad

DualRail™ — Dual Bottle Rail BTS

(7)

$35.00

AeroTriad

AngleSpacer™ — Angled BTA Spacer

(2)

$35.00

AeroGain

4.8

(87)

3DC Aero

BTA Bottle Extender/Adapter – Aero Cockpit Hydration Mount

$24.99

Exclusive offer available

Arvada Triathlon Company

BTA Bottle Mount Riser

$75.00

7% off

EZ Gains

EZ TriRig BTA Full System - 10w+ USA

$501.00$539.00

EZ Gains

Polymount

(2)

$153.00

WattShop

Anemoi BTA Mount

(1)

£87.50

Exclusive offer available

UrbanCycling.com

Multi-Bottle BTA Rail

$65.00

AeroGain

Aero BTS PRO system

$398.00

21% off

EZ Gains

EZ BTA Bullet®2-4 Watts - Gel Storage Holder

(10)

$75.00$95.00

EZ Gains

EZ Gains - Fast Fluids - Bottles

(7)

$7.00

WATTWORX

BTA Bottle Mount Universal

$119.00

WATTWORX

BTA Double Bottle Cage Adaptor

(8)

$39.00

EZ Gains

4.6

(624)

AeroTriad

Rear Bottle Mount BTS Canyon Speedmax before 2026— SpeedBlade™

(7)

$58.00

AeroTriad

ShiftLink™ — Offset BTA Spacer

(4)

$52.00

EZ Gains

BTA Elevator: Adjustable Between-the-Arms Bottle Mount

(2)

$229.00

AeroGain

Double Bottle BTA system

$194.00

TriRig

BTA Pro Kits

$735.00

53% off

EZ Gains

KU-TF1 75mm bottle tower

$54.00$115.00

EZ Gains

EZ Gains® Canyon BTA/Gear Groove

$159.00

AeroGain

Single bottle BTA system

$137.00

3dpari

BTS Bottle Cage Holder | Universal saddle mount (Angled, Straight, Direct) | Aero Saddle Bottle Mount | Tri Bike Hydration System

(1)

$97.00

Exclusive offer available

UrbanCycling.com

Universal BTA Adaptor Plate Collection

$115.00

Tetsuo

(36)

EZ Gains

Kappa Capsule 6 Watts

(1)

$177.00

3DC Aero

Aero BTA Bottle Nose Cone

$40.00

Playtri Sarasota

Profile Design Aerodrink Bracket w/ BTA Adaptor

$41.50

11% off

AeroTriad

FlowCone™ — Aero Gel Cone

(5)

$41.00$46.00

Hike-ready rain jackets

Packable jackets, 3-layer shells, and hoods.

AeroTriad

AeroFuel — 750 ml Aero Bottle

$12.00

EZ Gains

BTA Riser + BTA Spacer Kit

$135.00

Exclusive offer available

RA Cycles

TriRig BTA Pro Kit

$735.00

AeroGain

BTA mount top

(1)

$73.00

EZ Gains

TriRig Kappa Under BTA Cage (FULL CARBON 2.6mm)

(1)

$81.00

EZ Gains

Orbea TT BTA Mount

$107.00

Intune Aero

Between-the-arms hydration system Spares

$1.00

AeroGain

Aero BTA system

$194.00

RocketTT

V-FLOW Aero Dual Bottle Mount - PAHT-CF Composite - Triathlon & TT

€69.00

EZ Gains

Alpha Prime Carbon Aero Bar/Stem Combo System

$1,521.00

EZ Gains

Kappa Bullet - Computer Mount Garmin/Wahoo/Gel Storage Holder

$97.00

Surpas Official

Exclusive offer available

Arvada Triathlon Company

Universal BTA Adapter Plate

$85.00

AeroTriad

SecureLoop™ — Bottle Retention Straps x2

(21)

$23.00

AeroTriad

FlatSpacer™ — Flat BTA Spacer

$35.00

EZ Gains

EZ Hydro Gains® With TOOLBOX Up To 12 Watts

(6)

$303.00

EZ Gains

BTA Bottle Mount Riser

(1)

$77.00

3DC Aero

Custom Height/Angle BTA Bottle Mount

$40.00

Beginner fly fishing gear

Rod outfits, fly boxes, and nippers.

EZ Gains

Hydra Carbon Aero Bottle

(2)

$153.00

12% off

EZ Gains

EZ Universal BTA Adapter Plate - Medium/Small 150mm Wide

$101.00$115.00

TriRig

BTA Starter Kits

$245.00

TriRig

BTA Sport Kits

$495.00

Intune Aero

Between-the-arms hydration system (Unlisted bikes / Semi Custom)

$107.00

EZ Gains

BTA EZ Fixing Plate

$11.00

EZ Gains

Signature Closed Back Arm Cups: Redefining Comfort and Support

(1)

$209.00

AeroGain

Aero BTA system for Scott Plasma 6

$160.00

AeroGain

Aero BTS PRO - cup

(1)

$228.00

AeroTriad

FuelBox™ — BTA Bento Box

(2)

$63.00

AeroTriad

Aero Bottle Cage — FlowCage Pro™

(1)

$52.00

EZ Gains

Multi-Bottle BTA Rail

(2)

$66.00

EZ Gains

Universal BTA Adapter Plate - Large 200mm (223mm entire width)

(3)

$115.00

TriRig

BTA Bottle Mount Riser

(20)

$75.00

Z1 Cyclery

Multi-Bottle BTA Rail

$57.00

EZ Gains

NEW Double Bottle Mount Holder

(8)

$34.00

EZ Gains

EZ Hydro-Gains Toolbox Only

(4)

$243.00

TriRig

Hydra Carbon Aero Bottle

(7)

$150.00

At-home cardio essentials

Folding walking pads, exercise bikes, and free weights.

TriRig

Universal BTA Adaptor Plate Collection

(7)

$115.00

4% off

EZ Gains

Open Back Carbon Arm Cups: Aero Comfort Without Limits

$297.00$310.00

EZ Gains

76 Projects - 3.0 TT Mounts

(4)

$68.00

WATTWORX

BTA Bottle Mount - Fast TT Compatible

(1)

$68.00

3DC Aero

Aero Rear Bottle Cage Adapter – Vertical to Horizontal Mount

$45.00

The FlexStack™ is a dual-bottle BTA mount designed to maximize hydration capacity in ultra-triathlon and long-distance racing, with two bottles in full aero position.
Universal Compatibility

Standard 64mm bolt spacing — compatible with all BTA mounts
Modular mounting — use without base plate or stack 1 to 4 AeroTriad BTA base plates

5.0

8 ratings

Anonyme · August 25, 2026

Très belle pièce et efficace. Le rapport qualité/prix validé. Le problème pour moi c'est le poids.

Thierry · August 13, 2026

Monté sur support Trek Speedconcept

Maxime · April 15, 2026

Returns accepted within 14 days

Exclusions may apply. See full policy

AeroTriad

4.4 (89)

FlexStack™ — Dual Bottle BTA Mount

Description

Reviews5.0(8)

Delivery & Returns

AeroTriad

You might also like

BasePlate — BTA Mount Plate

BTA Adjust™ — Adjustable BTA Mount

TwinForce™ — Dual Bottle BTS Extension

BTA TriRig Hydra Carbon Aero Full System

BTA Spacer Kit

Hydra Bottle Translucent White

BTA Bottle Mount Riser

TriRig

Signature Open Back Arm Cups: Aero Comfort Made Simple

Single bottle BTA system with High-sided armrests

Hydra Carbon Aero Bottle

Vision TriMax Rear Hydration System Aero Mounting Dual Bottle Setup Triathlon Use – BLK

Gorilla XT Bottle Cage Matt Black

JCOB Type 5 Saddle Rear Dual Bottle Mount

Giant Trinity TT 2016-2024 BTA Hydration System

AeroBlade™ — Dual Rear Bottle Mount BTS

DualRail™ — Dual Bottle Rail BTS

AngleSpacer™ — Angled BTA Spacer

AeroGain

BTA Bottle Extender/Adapter – Aero Cockpit Hydration Mount

BTA Bottle Mount Riser

EZ TriRig BTA Full System - 10w+ USA

Polymount

Anemoi BTA Mount

Multi-Bottle BTA Rail

Aero BTS PRO system

EZ BTA Bullet®2-4 Watts - Gel Storage Holder

EZ Gains - Fast Fluids - Bottles

BTA Bottle Mount Universal

BTA Double Bottle Cage Adaptor

EZ Gains

Rear Bottle Mount BTS Canyon Speedmax before 2026— SpeedBlade™

ShiftLink™ — Offset BTA Spacer

BTA Elevator: Adjustable Between-the-Arms Bottle Mount

Double Bottle BTA system

BTA Pro Kits

KU-TF1 75mm bottle tower

EZ Gains® Canyon BTA/Gear Groove

Single bottle BTA system

BTS Bottle Cage Holder | Universal saddle mount (Angled, Straight, Direct) | Aero Saddle Bottle Mount | Tri Bike Hydration System

Universal BTA Adaptor Plate Collection

Tetsuo

Kappa Capsule 6 Watts

Aero BTA Bottle Nose Cone

Profile Design Aerodrink Bracket w/ BTA Adaptor

FlowCone™ — Aero Gel Cone

AeroFuel — 750 ml Aero Bottle

BTA Riser + BTA Spacer Kit

TriRig BTA Pro Kit

BTA mount top

TriRig Kappa Under BTA Cage (FULL CARBON 2.6mm)

Orbea TT BTA Mount

Between-the-arms hydration system Spares

Aero BTA system

V-FLOW Aero Dual Bottle Mount - PAHT-CF Composite - Triathlon & TT

Alpha Prime Carbon Aero Bar/Stem Combo System

Kappa Bullet - Computer Mount Garmin/Wahoo/Gel Storage Holder

Surpas Official

Universal BTA Adapter Plate

SecureLoop™ — Bottle Retention Straps x2

FlatSpacer™ — Flat BTA Spacer

EZ Hydro Gains® With TOOLBOX Up To 12 Watts

BTA Bottle Mount Riser

Custom Height/Angle BTA Bottle Mount

Hydra Carbon Aero Bottle

EZ Universal BTA Adapter Plate - Medium/Small 150mm Wide

BTA Starter Kits

BTA Sport Kits

Between-the-arms hydration system (Unlisted bikes / Semi Custom)

BTA EZ Fixing Plate

Signature Closed Back Arm Cups: Redefining Comfort and Support

Aero BTA system for Scott Plasma 6

Aero BTS PRO - cup

FuelBox™ — BTA Bento Box