can velcro straps be added?

No, there are no designated loops for Velcro straps on these pedals.

Could be use it in a Trek Marlin 6?

Yes, as long as the thread pattern is the standard 9/16 (i think) you should be good. Ive used this same pair on 2 different mountain bikes from 2 different brands with no issues.

these brand new pedals have big resistance. Does it need to unscrew external screw and put some grease inside to have them working smoothly ?

The peddles may be defective. The peddles I bought worked flawlessly out of the box. I screwed them on the arms using the Allen sockets. They felt good when spun by hand. I rode about 60 miles and they work like new. They are on bearings and don't spin like a top but they have very little resistance.

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ROCKBROS Mountain Bike Pedals Flat Lightweight Carbon Fiber 9/16" Red | Smooth Sealed Bearings, Grip Pins Keep Shoes Secure, Wide Platform for Stable Ride, Fits Road/MTB/City Bikes

Product ID: 222205048

Details

Brand
ROCKBROS
Color
Black
Item Weight
334 g
Material
Aluminum
Product Dimensions
4.5"L x 3.9"W

🦶6 threaded traction pins per side for unbeatable grip

⚖️Only 334g pair with wide platform for stable, lightweight control

⚙️100% Cr-Mo spindle & sealed bearings for ultra-smooth ride

28445CFA

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Description

🚴‍♂️ Elevate your ride with pedals that grip, glide, and go the distance!

GRIP THAT WONT QUIT - 6 rugged traction pins per side lock your shoes in place—ride safer, ride confident.
FEATHERWEIGHT STABILITY - At just 334g, the wide platform pedals deliver balanced support without weighing you down.
SILENT PRECISION BEARINGS - Sealed Cr-Mo spindle ensures noise-free, durable performance on every ride.
BUILT TO BRAVE THE ELEMENTS - High-strength aluminum with anti-oxidation coating resists corrosion for long-lasting durability.
UNIVERSAL FIT EFFORTLESS INSTALL - Standard 9/16” spindle fits all your bikes—MTB, road, hybrid, and beyond.

The ROCKBROS Mountain Bike Pedals combine a lightweight 334g aluminum alloy body with a durable 100% Cr-Mo spindle and sealed bearings for smooth, silent cycling. Featuring 6 traction pins per side, these pedals maximize shoe grip and control on any terrain. Their wide platform design enhances foot stability, while anti-oxidation coating ensures long-term durability. Compatible with a wide range of bikes, these pedals are engineered for professional-grade performance and everyday adventure.

Specifications

ASIN	B08FDWQJYD
Age Range Description	Adult
Best Sellers Rank	#91,285 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #202 in Bike Pedals
Bike Type	Mountain,Mountain Bike,Road Bike
Brand Name	ROCKBROS
Color	Black
Customer Reviews	4.6 4.6 out of 5 stars (623)
Item Dimensions L x W	4.5"L x 3.9"W
Item Weight	334 g
Manufacturer	ROCK BROS
Manufacturer Part Number	K306-BK/US
Material Type	Aluminum
Model Number	K306-BK/US
Number of Items	1
Product Style	Modern
Thread Size	16-Sep

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28445CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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1 month ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

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