--- product_id: 504928482 title: "BOLANY Bike Cranksets 170mm Hollow Integrated 104BCD Single Speed Round Chainring 34T/36T MTB Crankset with Bottom Bracket" brand: "bolany" price: "73233CFA" currency: XOF in_stock: true reviews_count: 13 category: "Bolany" url: https://www.desertcart.sn/products/504928482-bolany-bike-cranksets-170mm-hollow-integrated-104bcd-single-speed-round store_origin: SN region: Senegal --- # BB91 threaded bottom bracket with high-lubricity bearings 900g lightweight with internal weight reduction 7075 T6 Aluminum Alloy durability BOLANY Bike Cranksets 170mm Hollow Integrated 104BCD Single Speed Round Chainring 34T/36T MTB Crankset with Bottom Bracket **Brand:** bolany **Price:** 73233CFA **Availability:** βœ… In Stock ## Summary > πŸš΄β€β™‚οΈ Elevate your ride with precision power and sleek durability! ## Quick Answers - **What is this?** BOLANY Bike Cranksets 170mm Hollow Integrated 104BCD Single Speed Round Chainring 34T/36T MTB Crankset with Bottom Bracket by bolany - **How much does it cost?** 73233CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/504928482-bolany-bike-cranksets-170mm-hollow-integrated-104bcd-single-speed-round) ## Best For - bolany enthusiasts ## Why This Product - Trusted bolany brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Effortless Customization:** Removable high-strength chainring (34T/36T) lets you tailor your ride with ease. - β€’ **Upgrade Your Vintage Ride:** Transforms old MTB frames with enhanced rigidity and modern precisionβ€”don’t get left behind. - β€’ **Lightweight Yet Rock-Solid:** Hollow integrated crank arms and internal weight reduction deliver power without the bulk. - β€’ **Seamless Pedaling Experience:** BB91 bottom bracket with built-in high-lubricity bearings ensures whisper-quiet, smooth rides every time. - β€’ **Precision Engineered for Peak Performance:** Crafted from aerospace-grade 7075 T6 aluminum for unmatched strength and longevity. ## Overview The BOLANY Bike Crankset is a high-performance, lightweight 170mm crankset crafted from durable 7075 T6 aluminum alloy. Featuring a hollow integrated design and a 104BCD single-speed round chainring (34T/36T), it includes a BB91 threaded bottom bracket with high-lubricity bearings for smooth, quiet pedaling. Weighing approximately 900g, this crankset offers enhanced rigidity and easy customization, making it a top-tier upgrade for both vintage and modern mountain bikes. ## Description desertcart.com : BOLANY Bike Cranksets 170mm Hollow Integrated 104BCD Single Speed Round Chainring 34T/36T MTB Crankset with Bottom Bracket (34T) : Sports & Outdoors Review: Great cheap upgrade for an old bike! But be aware that better exists for only little more. - It's really hard to fault these things. I've been using these crank kits and the 2x version on so many bikes by now and if you have a vintage bike, this is a SPECTACULAR upgrade. Increasing the rigidity of the bottom bracket on an old 90's mountain bike genuinely transforms the ride feel. They're DURABLE, they are smooth, the value is unbeatable. Fit and finish is excellent. Don't forget to use anti-seize on the threads. Please god don't forget. the cups are labeled, but remember the drive side is turn LEFT to tighten. The only caveats I'll give are these: 1.) the included bottom bracket is not bolany's nicer one. It has great bearings and rolls great, but you do need to use all the spacers included with it if you are upgrading an older bike. 2.) it's pre-greased nicely but the O rings it slides into, even with extra grease, are TIGHT. So it did require a few taps with a soft mallet (or a block of wood against it and tapping that with a metal hammer) But once it's in, it spins great. Overall, this is just the no-brainer for a cheap 1x conversion. And the bolany 2x as well for a two speed. However, if you want a more premium setup, the shimano deore m5100 crankset is only about $55-60, and paired with a bucklos BBH M530 that's $13, and you've got a nicer setup for only a little more money. Review: Crank upgrade for hyper 29r - Perfect fit for my hyper 29r full suspension budget build !!!! Point, don't use the spacer on the chain ring side to keep some what the original geometry ## Features - Material: Crafted from 7075 T6 Aluminum Alloy, this crankset offers durability and precision. Its Aluminum Alloy crank arm and chainring ensure smooth shifting and precise tooth shapes. The removable high-strength chainring allows for easy retrofitting, while the Chrome Molybdenum Steel shaft enhances stability. - Specifications: With a 170mm Crank arm, 104BCD, and a Hollow Integrated design, this crankset includes a BB91 threaded bottom bracket and crank dust cap for added protection. The crank dust cover shields the crank effectively. Its wide and narrow tooth single speed round chainring provides reliability. The total weight is approximately 900g. - Bottom Bracket: The BB91 threaded bottom bracket is suitable for 68-73mm bottom bracket MTBs and road bikes. It features built-in high-lubricity bearings, ensuring smooth pedaling and noise reduction. Additionally, it comes with three aluminum alloy gaskets. - Internal Weight Reduction: Designed with internal weight reduction techniques, these cranks are lighter, providing enhanced efficiency. Multiple threads secure the components, resulting in a more direct crank force. The CNC machining process and surface heat treatment forging contribute to higher strength. - BOLANY COMPANY NEW RELEASES: BOLANY, known for providing cyclists worldwide with satisfactory forks and cassettes, now introduces a range of bike cranksets to complement their line of accessories. Find these quality products in BOLANY's desertcart store. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0BMLPDD8L | | Best Sellers Rank | #285,826 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #257 in Bike Cranksets | | Brand Name | BOLANY | | Color | 34T | | Customer Reviews | 4.2 4.2 out of 5 stars (63) 4.2 out of 5 stars | | Date First Available | November 16, 2022 | | Included Components | Bike Cranksets, Bottom Bracket, Single Chainring | | Item Package Dimensions L X W X H | 11.02 x 6.77 x 6.73 inches | | Item Weight | 1.29 kg | | Manufacturer | BOLANY | | Material | Aluminum | | Model Name | SEER | | Package Weight | 1.28 kg | | Part Number | SEER 2.0 | | Size | 34T/36T | | Suggested Users | unisex-adult | | Warranty Description | 1 | ## Images ![BOLANY Bike Cranksets 170mm Hollow Integrated 104BCD Single Speed Round Chainring 34T/36T MTB Crankset with Bottom Bracket - Image 1](https://m.media-amazon.com/images/I/71tIVrZbVzL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: What kind of wrench to install?** A: Allen winch to install the cranks and there is a special tool for the bottom bracket. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great cheap upgrade for an old bike! But be aware that better exists for only little more. *by C***C on July 30, 2026* It's really hard to fault these things. I've been using these crank kits and the 2x version on so many bikes by now and if you have a vintage bike, this is a SPECTACULAR upgrade. Increasing the rigidity of the bottom bracket on an old 90's mountain bike genuinely transforms the ride feel. They're DURABLE, they are smooth, the value is unbeatable. Fit and finish is excellent. Don't forget to use anti-seize on the threads. Please god don't forget. the cups are labeled, but remember the drive side is turn LEFT to tighten. The only caveats I'll give are these: 1.) the included bottom bracket is not bolany's nicer one. It has great bearings and rolls great, but you do need to use all the spacers included with it if you are upgrading an older bike. 2.) it's pre-greased nicely but the O rings it slides into, even with extra grease, are TIGHT. So it did require a few taps with a soft mallet (or a block of wood against it and tapping that with a metal hammer) But once it's in, it spins great. Overall, this is just the no-brainer for a cheap 1x conversion. And the bolany 2x as well for a two speed. However, if you want a more premium setup, the shimano deore m5100 crankset is only about $55-60, and paired with a bucklos BBH M530 that's $13, and you've got a nicer setup for only a little more money. ### ⭐⭐⭐⭐⭐ Crank upgrade for hyper 29r *by S***S on July 11, 2026* Perfect fit for my hyper 29r full suspension budget build !!!! Point, don't use the spacer on the chain ring side to keep some what the original geometry ### ⭐⭐⭐⭐⭐ Good crankset *by A***N on April 29, 2023* Good crankset so far. It's basically a SHIMANO ZEE but half the price. Item comes in a nicely packaged box. My biggest fear was that this thing would fall apart but so far everything seems to be solid. I put over 100 miles on it. I converted my old 8-speed 3x to a 1x. Old crank used a square taper BB. This one appears to be hollowtech II. One thing to note is that the BB comes with two spacers and you're supposed to use one spacer on the drive side if your bike frame accepts a 73mm BB. But that caused the chain to fall off from the crank when I was in the lowest gear (largest cassette ring) in the back because the chainline was too crossed. So I had to remove the spacer and no more chain drops. I went with 36T chainring version and it seems to be adequate. You'll run out of gears when descending on pavement. If you don't want that to happen you can buy a 42T chainring. Chainring is narrow-wide type. ## Frequently Bought Together - BOLANY Bike Cranksets 170mm Hollow Integrated 104BCD Single Speed Round Chainring 34T/36T MTB Crankset with Bottom Bracket - Boao Universal Bicycle Transmission Line Bicycle Shift Derailleur Cable and Brake Cable Kit for Mountain Road Bike Repair --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/504928482-bolany-bike-cranksets-170mm-hollow-integrated-104bcd-single-speed-round](https://www.desertcart.sn/products/504928482-bolany-bike-cranksets-170mm-hollow-integrated-104bcd-single-speed-round) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-09-08*