This item is considered oversized. Due to increased shipping rates and surcharges from carriers, including UPS and FedEx, this item will incur an additional Peak Season Surcharge Oversized Fee. Such surcharges will remain in place until January 16, 2021, or until such time UPS and FedEx suspend these fees. You may find out more about Peak Surcharges on ups.com and fedex.com.
wishing to explore singletrack and dirt trails with a mountain
bike built for real trails, with trail capable suspension forks and
all-conditions disc brakes. The Bolinas Ridge 26 is the perfect
adolescent mountain bike to explore with.
Frame: | Series 1 6061 Aluminum, 27.5”/29" Wheels, Low Stanover, 68mm BB shell, 135mm Forged Dropouts, Chainstay Mounted Disc Brakes |
---|---|
Fork: | SR Suntour XCM DS 27.5”, 100mm Travel, Preload Adjustment |
Rear Shock: | N/A |
Crankset: | Shimano FC-TY301, 42/34/24T |
Shifters: | Shimano ST-EF51 3x8-Speed |
Headset: | FSA No.10-P |
Wheelset: | Marin, Double Wall Alloy |
Seatpost: | Marin Alloy |
Derailleur: | Shimano Altus, 8-Speed |
Stem: | Marin Alloy, 31.8 Clamp, 45mm |
---|---|
Handlebars: | Marin 31.8 Riser, 12mm Rise, 780mm Width |
Saddle: | Marin MTB |
Cassette: | SunRace 8-Speed, 11-32T |
Brakes: | Power CX7 Mechanical Disc, Shimano Pad Compatible |
Tires: | MTB, 27.5/29x2.25" |
Bottom Bracket: | Sealed Cartridge Bearings, Square Taper |
Pedals: | Nylon Platform |

All bikes purchased through Topos Outdoor MUST be assembled by a certified bike shop mechanic. If the bike is NOT built by a certified bike shop mechanic, any warranty will be VOID. We will request for an assembly receipt as proof of professional installation.
For all warranty claims, please contact our Warranty Team at info@toposoutdoor.com. So that we can help you in a timely manner, make sure to include the following:
- 1. Order Number (we will confirm date of purchase and determine if the item is still under the manufacturer’s warranty time limit)
- 2. Brief description of the claim
- 3. Photographs
- 4. If the item is a bike or frame, include the serial number
We evaluate all warranties case-by-case to determine the best course of action and get you serviced to the best of our ability!
Warranty does not apply to the following:
- • Any part of a product that has been installed, altered, repaired, or misused
- • Damage from unintended style of riding, abuse, neglect, accident, and racing
- • Normal wear and tear of any product (including but not limited to - saddles, grips, tires, tubes, cables, brake pads, chains)
- • Failure to provide regular maintenance of any product
- • User Error
Labor and shipping are the responsibility of the customer. We do not cover parts purchased and labor performed by another bike shop.
Note: Warranty is for original owner only.
wishing to explore singletrack and dirt trails with a mountain
bike built for real trails, with trail capable suspension forks and
all-conditions disc brakes. The Bolinas Ridge 26 is the perfect
adolescent mountain bike to explore with.
Frame: | Series 1 6061 Aluminum, 27.5”/29" Wheels, Low Stanover, 68mm BB shell, 135mm Forged Dropouts, Chainstay Mounted Disc Brakes |
---|---|
Fork: | SR Suntour XCM DS 27.5”, 100mm Travel, Preload Adjustment |
Rear Shock: | N/A |
Crankset: | Shimano FC-TY301, 42/34/24T |
Shifters: | Shimano ST-EF51 3x8-Speed |
Headset: | FSA No.10-P |
Wheelset: | Marin, Double Wall Alloy |
Seatpost: | Marin Alloy |
Derailleur: | Shimano Altus, 8-Speed |
Stem: | Marin Alloy, 31.8 Clamp, 45mm |
---|---|
Handlebars: | Marin 31.8 Riser, 12mm Rise, 780mm Width |
Saddle: | Marin MTB |
Cassette: | SunRace 8-Speed, 11-32T |
Brakes: | Power CX7 Mechanical Disc, Shimano Pad Compatible |
Tires: | MTB, 27.5/29x2.25" |
Bottom Bracket: | Sealed Cartridge Bearings, Square Taper |
Pedals: | Nylon Platform |
All bikes purchased through Topos Outdoor MUST be assembled by a certified bike shop mechanic. If the bike is NOT built by a certified bike shop mechanic, any warranty will be VOID. We will request for an assembly receipt as proof of professional installation.
For all warranty claims, please contact our Warranty Team at info@toposoutdoor.com. So that we can help you in a timely manner, make sure to include the following:
- 1. Order Number (we will confirm date of purchase and determine if the item is still under the manufacturer’s warranty time limit)
- 2. Brief description of the claim
- 3. Photographs
- 4. If the item is a bike or frame, include the serial number
We evaluate all warranties case-by-case to determine the best course of action and get you serviced to the best of our ability!
Warranty does not apply to the following:
- • Any part of a product that has been installed, altered, repaired, or misused
- • Damage from unintended style of riding, abuse, neglect, accident, and racing
- • Normal wear and tear of any product (including but not limited to - saddles, grips, tires, tubes, cables, brake pads, chains)
- • Failure to provide regular maintenance of any product
- • User Error
Labor and shipping are the responsibility of the customer. We do not cover parts purchased and labor performed by another bike shop.
Note: Warranty is for original owner only.

#TOPOSOUTDOOR

Perfect ! The expected delivery time was just on time


I had a great experience ordering two mountain bikes from Topos for my 10 & 12 year old sons. When I called, i spoke with a real person who helpfully answered my questions and assured me that the bikes I was ordering were actually in stock and not pre-order. The bikes shipped quickly. When they arrived I took them to a local bike shop where they assembled them for $40/each. We'll definitely be looking at TOPOS for future purchases. Great company. Love our Marin MB's.

Costumer service very slow, i have to call them twice to proces my order.
wishing to explore singletrack and dirt trails with a mountain
bike built for real trails, with trail capable suspension forks and
all-conditions disc brakes. The Bolinas Ridge 26 is the perfect
adolescent mountain bike to explore with.