Can anyone explain what the black powdery substance that fell onto the floor under the rear wheel is from?

Make sure to rotate your tires when using a trainer, since it can cause uneven wear if you don’t.

What minimum and maximum axle widths are supported?

I have this question too, and everyone seems to think they have the answer, but so far all I've seen is a lack of understanding of the different types of axles out there. Just so everyone is aware, NOT ALL bikes can use a QR (quick release) skewer. Many modern bikes can only use a threaded thru-axle. With past trainers, I've had good success using axles from the Robert Axle project and the Traxle from Kinetic. Many new bikes use hubs that are wider than they used to be. So Alpcour...can you please directly answer this question? : Can you use a bike with a 12x142 rear thru-axle with this stand? I understand that I will have to replace the axle on my bike. But the key question is if the dimensions are large enough to fit a bike with that axle width. Most trainers like this are NOT wide enough. Can you please clarify?

instructions say if your bike has a bolt you dont have to remove the skewer. what does tjat mean? how do i tell if it has a bolt?

Hi, If the Bikes Rear Wheel has a Removable Bolt which Holds the Wheels in Place than the Trainer will work Perfectly. But if the Bold is not easy to remove you will need to replace it with the Included Quick-Release Skewer.

So my 700c genius’s saber with no quick release can be used for this device?

Hi, Please Note. The Bike Trainer Stand will work Perfectly with any Bike that has 26-28" or 700c Wheels and Rear Axel between 4.92"- 6.57". If you need a Quick-Release Skewer, It is Included in the Package.

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Alpcour Bike Trainer Stand – Portable Stainless Steel Indoor Trainer w/Magnetic Flywheel, Noise Reduction, 6 Resistance Settings, Quick-Release & Bag – Stationary Exercise for Road & Mountain Bikes

Alpcour Bike Trainer Stand – Portable Stainless Steel Indoor Trainer w/Magnetic Flywheel, Noise Reduction, 6 Resistance Settings, Quick-Release & Bag – Stationary Exercise for Road & Mountain Bikes

Product ID: 260003985

Details

Brand
Alpcour
Colour
black
Frame material
Stainless
Material
Stainless
Number of settings
6

👜foldable & portable with carrying bag

🔇super quiet magnetic flywheel tech

⚙️6 resistance levels for tailored workouts

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Description

🚴‍♂️ Elevate your ride indoors — train smarter, not harder!

PACK FOLD AND GO - Lightweight, foldable design with a free carrying bag makes it effortless to store and transport your trainer wherever your fitness journey takes you.
BUILT TO LAST STAY PUT - Heavy-duty stainless steel frame with anti-slip pads and a front wheel riser block ensures safety and stability during intense sessions.
CUSTOMIZE YOUR CHALLENGE - Six adjustable resistance settings let you simulate everything from flat roads to steep hills, perfect for interval training and endurance.
RIDE ALL YEAR RAIN OR SHINE - Transform any road or mountain bike into a smooth, stable indoor trainer for consistent training no matter the weather.
WHISPER QUIET MAGNETIC RESISTANCE - Experience realistic cycling with a noise-reducing magnetic flywheel that keeps your focus without distracting whirring sounds.

The Alpcour Bike Trainer Stand is a durable, portable indoor cycling trainer compatible with most 26-28 inch and 700c road and mountain bikes. Featuring a quiet magnetic flywheel with 6 resistance levels, a sturdy stainless steel frame, and a foldable design with a carrying bag, it offers a realistic, customizable, and convenient training experience for dedicated cyclists year-round.

Specifications

ASIN	B07PYHLTSX
Best Sellers Rank	#125,797 in Sporting Goods ( See Top 100 in Sporting Goods ) #110 in Bike Resistance Trainer Accessories
Bike Type	Mountain Bike, Road Bike
Brand Name	Alpcour
Color	black
Customer Reviews	4.4 4.4 out of 5 stars (1,815)
Frame Material Type	Stainless Steel
Included Components	ZRW-QXTH-SRK
Item Dimensions L x W x H	54.6L x 48.3W x 41.9H centimeters
Item Type Name	ZRW-QXTH-SRK
Item Weight	9.34 Kilograms
Load Capacity	1.5E+2 -250 pounds
Manufacturer	Alpcour
Manufacturer Part Number	APC-BTSMBK
Material Type	Stainless Steel
Model Name	ZRW-QXTH-SRK
Model Number	APC-BTSMBK
Number of settings	6
Resistance Mechanism	Magnetic
UPC	661094056573
Unit Count	1 Count
Warranty Description	NO
Wheel Size	29 Inches

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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