Description
B.I.G. – Full Suspension Mountain Bikes for Big Guys
Best Mountain Bikes for Heavy Riders
If you’re a bigger guy who loves mountain biking, Zinn Cycles has some great options. With the B.I.G 29er, you can enjoy full suspension, updated geometry, and more efficiency in a bike made just for you. This is the ultimate mountain bike for the biggest of riders, and it’s available in four-, five-, and six-inch travel! Learn more about the unique features of the B.I.G. and discover the best mountain bike for heavy riders here.
B.I.G. 29er Features
As a full-suspension mountain bike, the B.I.G has a four-bar suspension design for more reliability and comfort. In addition to the unique full-suspension mountain bicycle configuration, you can also enjoy a number of essential features, including:
- High handlebars for better control and comfort
- Big wheels for rolling over obstacles (29er or 29er Plus)
- Long & thick head tube for stiffer frames and better fit
- Accommodation for up to 210mm custom cranks
- S-Shaped downtube for more stiffness & durability with rear shock compatibility
- 12 x 148mm (Boost) rear through axle for more strength and clearance
With all of these specifications combined, the result is a more controllable bike for the most technical terrain. Handle steep trails and enjoy clearance for rear shock with a bike that’s made in XXL-Plus (24”frame) and XXXL (26” frame) sizes.
B.I.G. Full Suspension Mountain Bikes for Big Guys
Specifications
| B.I.G. Geometry Chart | XXL – Four | XXL – Five | XXL – Six | XXXL – Four | XXXL – Five | XXXL – Six |
| Rear Travel | 110mm | 140mm | 160mm | 110mm | 140mm | 160mm |
| Fork Travel | 120mm | 140-150mm | 150-160mm | 120mm | 140-150mm | 150-160mm |
| Effective Top Tube Length | 650mm | 650mm | 650mm | 675mm | 675mm | 675mm |
| Stack* | 652mm | 652mm | 652mm | 665mm | 665mm | 665mm |
| Reach* | 480mm | 480mm | 480mm | 500mm | 500mm | 500mm |
| Standover height | 32.9″ | 32.9″ | 32.9″ | 34.4″ | 34.4″ | 34.4″ |
| Effective Seat Angle | 75 deg | 75 deg | 75 deg | 75 deg | 75 deg | 75 deg |
| Head Tube Angle | 67.5 deg | 66.5 deg | 66 deg | 66 deg | 65deg | 64deg |
| Chainstay Length | 450mm | 450mm | 450mm | 450mm | 450mm | 450mm |
| BB height | 14″ | 14.7″ | 15″ | 14″ | 14.7″ | 15″ |
| Max Crank Length | 210mm | 210mm | 210mm | 210mm | 210mm | 210mm |
| Wheelbase | 1275mm | 1280mm | 1285mm | 1300 | 1305 | 1310 |
| * Due to the higher bottom bracket and longer cranks, Stack and Reach numbers are significantly reduced as compared to other bikes with insufficient BB height for proportionally tall cranks. This means you cannot directly compare Stack and Reach numbers to other brands. | ||||||
| Handmade aluminum frame BSA 73mm threaded bottom bracket shell 44mm/49mm tapered headtube 30.9mm seatpost diameter 29×3.0″ tire clearance Dropper Post ready Rear I/S disc brake tab |
12x148mm rear through axle (BOOST) 1x specific – not compatible with front derailleur Compatible with all tapered forks 34.9mm outside ST diameter for seatpost clamp 29 plus compatible – 29×2.4″ minimum recommended Internal routing for stealth dropper posts 203mm max rotor size front and rear |
Get Fitted
The best mountain bike for heavy riders also means you get a great fitting bike. No matter where you live, we’ll make a fitting session happen. You can visit us in person at our Boulder, Colorado location, or you can set up a video fit session with us. We also provide detailed measurement instructions for simple online submission.
Unique Bike Design
At Zinn Cycles, we have a specialized design philosophy that addresses everything from the best mountain bikes for heavy riders to the most petite bikes in our lineup. Because we’ve been designing and building bikes since 1982, we’ve learned how to accommodate cyclists of every size, shape, and ability level. We’re one of the few companies in the world that works towards improving the riding experience for literally everyone, including women, special sizing needs, and physical impairments. With our upgraded Silver and Gold Medal Fits, we’ve managed to address cyclist concerns for those who suffer from injuries, chronic pain, reduced mobility, and tons of other health issues.
How We Build Bikes
There’s so much more to building a custom bike than most people imagine. We don’t just scale frames up or down to meet your sizing needs – our team considers every single component, from the position of the handlebars to the length of the fork and proportion of the cranks. So when you choose Zinn Cycles, you’re getting a bike that’s proportional, lightweight, and ultra-stiff. Enjoy more comfort, better performance, and enhanced durability with a bike from Zinn Cycles.
Order Today!
If you are ready to order one of the best mountain bikes for heavy riders? Start your order for a full-suspension mountain bike from Zinn Cycles now. Schedule an in-person fitting or submit your measurements online and pay your deposit. We’ll reach out to you soon with any questions and to discuss fit and components.
No matter where you live in the world, we will work with you to make sure the fit of your Zinn bike is absolutely perfect. We offer a full service in-house bike fitting for those who can make it to Boulder, Colorado and we also have detailed measurements instructions for those who cannot make it out for an in-house fitting. We are also happy to work directly with a bike fitter in your area, and we offer upgraded 3D bike fittings with Dr. Andy Pruitt at the Boulder RETUL Center.
Design
Zinn Cycles Design Philosophy
Lennard Zinn has been designing and building great bikes of all types for big and tall cyclists, small women, cyclists with injuries, and everyone else since 1982. He is one of the few bike designers in the world that has dedicated his career to improving the performance and durability of big and tall bikes and bikes for women. He has also spent a great deal of time working with Dr. Andy Pruitt to design bikes for cyclists who have suffered from injuries, reduced mobility, knee problems, back problems, neck problems, and any other ailment you can imagine. There are many more factors to building a big and tall bike than most people understand. It is not as simple as just scaling up a “normal” sized frame and calling it good. When you do that, several things happen to the bike. First, the stretched out tubes become less stiff, which results in high speed frame shimmy. This is a scary by-product of a poorly designed bike. Second, the added material makes the bike heavier, especially if the builder tries to solve problem number one with just using bigger heavier tubes. Third, without a fork with a long enough steering tube, the handlebars will be far too low for the tall cyclist causing discomfort in the back, neck, wrists, and arms. Fourth, building a bike for a tall or small rider with average length cranks will make the rider feel unnatural while pedaling. Proportional crank length is at the heart of all of our custom bike designs. We offer cranks from 130mm all the way up to 220mm so we can properly fit any person in the world, no matter their size. Lennard has developed great frame design concepts to address and solve all of these issues and more. A bike designed by Lennard Zinn will be stiff and strong, while remaining lightweight. It will never shimmy at high speeds, and all of the components will be proportional to the rider. Fit, performance, comfort, and durability will all be superior on a Zinn bike than a bike from any other designer out there. We guarantee it.
Order a bike now
Excited about your new bike? While you are welcome to come to our location for a full fitting, it is not necessary. You can easily follow the instructions for submitting your own measurements by clicking the measurements button below. To start the order process, please click the button below to pay a deposit. We will contact you with further instructions. Once we have your measurements and deposit, we will create a CAD drawing of your bike for you to review.
Notoriously BIG full suspension bikes
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