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LV 145mm 29/27.5+ Frame | Dream Build Kit | DVO Suspension & OneUp Components

1 review Add your review


Frame Pre-Order Deposit : $449.00

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*Order Now To Be Put In Queue for Fastest Delivery – Will Ship in Approximately 2-4 Weeks*


USA Hand Built Chromoly Steel Full Suspension, by Experienced Riders, for all Riders


What’s Included:

What’s listed in the drop down menus that you choose.
What’s stated as being included in the specs.


LV145 Chromoly Steel Mountain Bike Frame

From our years of experience with many other bikes, finding what we loved and disliked, they always left us with a bigger dislike list than love list. They did a satisfactory job but we wanted a bike that blew all the others away. This was the motivation for the LV chromoly steel full suspension frame, the best of what we loved with the added bonus of our features that we wished we had such as a comfortable yet supportive ride.

Steel Dreams Come True

Including major components for your next mountain bike build our dream build kit will make your dreams come true. Your choice of Fork, Shock, Dropper Post, Grips and Pedals from our premium components partners. Only the best for the best, our customers!

Efficient Pedaling & Playful

Play in the parking lot and then get serious on the single track, this is your next frame. Our 2022 LV145 Chromoly Steel Full Suspension Mountain Bike Dream Build Kit checks all the right boxes. We’re able to keep up with the trends faster than the big brands and give you a bike that won’t become obsolete next year. We’re ahead of the curve on Geo. Our LV145 MTB frame was designed for the rider that was looking for the best all-rounder they could find. LV145’s pivot point has been revised to offer over 100% anti-squat for more pedaling efficiency than ever before! This is a bike that pedals up, jibs and slays single track all in the same session.

CNC Machining

We opted for CNC machined shock mount/pivot arms to help give our frame it’s high end feel. Nothing says “high-end” more than CNC machined parts, especially our 4140 chromoly arms which are not kind to tooling and extremely expensive to machine. We spared no expense to offer a frame that despite it’s simplicity, it’s overachieving compared to bikes that cost a lot more.

Single Pivot Steeze and Durability

Stainless steel pivot axle and quad 6001-2rs bearings double stacked for longevity and rigidity where it matters most. Thanks to modern suspension technology, single pivot is back. Why single pivot? Easy maintenance and easy on your wallet. The ride is predictable and it doesn’t get hung up as easily on impacts which allows you to carry more speed on those steep descents.


Slider Dropouts enable fine tuning of rear wheel adjustment due to wildly variable tire manufacturer sizing measurements. We think outside the box, so we offer a solution to fitment of your favorite size wheels and tires without sacrificing anything you’d love in a chromoly steel frame.

Modern Specs

Made for 73mm BSA bottom bracket, 148mm boost, internal cable routing for dropper seat posts, tapered forks. All your modern trail bike specs in a more progressive and exciting package.

Size Chart and Geometry

The LV was developed with progressive forward thinking geometry in mind. Utilizing slack geometry with 37-46mm offset forks provides a stable, fast and well handling steed.



(5’5″/1.65m to 5’10″/1.78m)


(5’10″/1.78m to 6’1″/1.84m)


(6’1″/1.84m to 6’6″/1.98m)

Head Tube Angle

64° (160mm Forks)
64.5° (150mm Forks)
64° (160mm Forks)
64.5° (150mm Forks)
64° (160mm Forks)
64.5° (150mm Forks)

Seat Tube Angle

76° (160mm Forks)
76.5° (150mm Forks)
76° (160mm Forks)
76.5° (150mm Forks)
76° (160mm Forks)
76.5° (150mm Forks)

Headtube Length

110mm 110mm 110mm

Bottom Bracket Drop

30mm 30mm 30mm


(Seat tube is offset 30mm forward of the BB – Blend the virtual top tube and reach measurement to find your ideal fit)

465mm 495mm 514mm

Virtual Top Tube

597mm 614mm 617mm

Wheel Base


1208mm 1225mm 1248mm

Front Center

773mm 790mm 813mm

Seat Tube Length

405mm 425mm 455mm

Chainstay Length

445mm (adjustable +15mm) 445mm (adjustable +15mm) 445mm (adjustable +15mm)


Modern Specs in a Steel Package

Frame Weight 8lbs 14oz/4kg To 10lbs/4.5kg (Size 1-Size 3 – raw, no hardware, no shock)
Headset Not Included
Spec: ZS44-28.6/EC44-40 (example: Cane Creek Part Number BAA0717K or other brand)
Rear Axle Included
Spec: 180mm Length – 12×1.5 Thread Pitch
Rear Wheel Travel ~145mm (Axle Path)
Rear Wheel Tire Clearance Up To ~27.5×2.6″ to 29×2.4″(Adjustable for smaller are larger wheels/tires)
Rear Shock 200x50mm (7.875″x2″)
Shock Hardware 22x8mm Front and 40x8mm Rear
Hub Spacing Rear BOOST 148mmx12mm (Axle Included)
Bottom Bracket Standard 73mm BSA Threaded
Max Fork Travel 170mm
Forks Steerer Spec Tapered Forks 1.5″ > 1-1/8″
Seatpost Diameter 31.6mm
Dropper Seatpost Cable Routing Internal
Seat Post Clamp 34.9mm (Included)
Hydraulic Disc Brake Mount Rear IS
Hydraulic Brake Disc Diameter Max (Rear) 203mm
ISCG-05 Recommended ISCG-05 BB Adapter as shown HERE

Why Chromoly?

Why Chromoly?

Chromoly is much stronger than traditional steel and aluminum alloys. Chromoly is the most earth friendly material that we’ve seen besides bamboo that’s being made into bicycles. Studies show that chromoly requires 6-11 times less energy and emissions than competing materials to mine, manufacture and process.

Most people looking to buy our frame will have their minds made up on chromoly steel frames and prefer this material for their next frame but if you’re new to or curious about this amazing material, here are some of the advantages you’ll hear from experienced riders:


Chromoly steel bike frames possess a natural flex that absorbs sounds. While not completely silent when contact is made with rocks or roost, the ride is very stately feeling. Focus on the path ahead, not nuisances.


You’re buying a bike that will stand the test of time with proper care and maintenance. Imagine owning a bike that can be welded and repaired rather than degrade and be thrown away. Most people consider the user-friendly nature of chromoly to be a very wise investment.


Our steel full suspension mountain bike frames are engineered with controlled flex, working with the natural characteristics of heat treated chromoly and stiffening it up where it’s necessary for maximum efficiency. Chromoly tubing for a mountain bike is very thin yet incredibly strong, it has an inherent flex that people strive for in order to reduce vibrations translated to their hands and feet which works to reduce rider fatigue and increase rider comfort. Ride longer, more comfortably and much harder. Slight flex in the rear keeps the wheel planted in sharp hard turns keeping you on two wheels.


Chromoly’s strength to weight ratio rivals that of titanium yet it’s more affordable. Rest easy knowing what you’ve accepted as norm, steel is strong. Imagine a high-tech, lighter weight yet stronger alloy of steel being made into a frame for your next mountain bike. There are pluses and minuses for every known material being made into a mountain bike frame but welded seems, not glued, is something we personal feel is more solid and secure. Metal melted to metal, not piece, glued to piece. Fancy marketing words will lead you to believe other materials are “one solid piece” (“Monocoque”) but research shows that’s misleading, it’s actually multiple segments glued together into one piece which is strong too for only a comparably very short lifespan. Ride safe though, we can’t be held responsible for your new found feel of steel, ride at your own risk, ride responsible.

Color Examples

Color Examples

Best Steel Mountain Bike FrameBest Steel Hardtail Mountain Bike FrameBest Steel Mountain Bike FrameBest Full Suspension Mountain BikesBest Steel 29er Full Suspension Mountain BikeSteel 29er Mullet FrameSteel Hardtail Mountain Bike



Original Owner:

3 Years Repair or Replacement Materials and Workmanship Warranty

Second Hand Owner:

2 Years Materials and Workmanship from Original Owner’s Purchase Date

Warranty Terms

DVO Forks Specs

DVO Forks Specs

Diamond Boost Fork Specs


High/Low Speed Comp. – Rebound – OTT


27.5=150-170 | 29er=140-160 (29er 170mm Coming Soon)

Standard Offset Crown

Offset: 27.5=44mm | 29=51mm

Short Offset Crown

Offset: 27.5=37mm | 29=44mm

Axle To Crown

27.5 = 565mm | 29 = 572mm (at max travels)


35mm Tapered Aluminum Alloy

Wheel Size

27.5 & 29


15mm Boost

Steerer Options

Tapered Aluminum Alloy

Brake Disc

Direct Mount 160mm (Post)


Onyx SC Boost Fork Specs


High/Low Speed Comp. – Rebound – OTT



Standard Offset Crown



Magnesium, Disc Only

Axle To Crown

575mm (at max travel)


36mm Tapered Aluminum Alloy

Wheel Size

27.5/650b: Up to 180mm
29er: Up to 180mm


15mm Boost

Steerer Options

Tapered Aluminum Alloy

Brake Disc

Direct Mount 180mm (Post)

1 review for LV 145mm 29/27.5+ Frame | Dream Build Kit | DVO Suspension & OneUp Components

  1. Tom Schmidt (verified owner)

    I am very happy with my decision to go with a custom build and choosing Ferrum as my frame builder of choice. Clean welds and great eye on detail. I would highly recommend Ferrum to anyone that is looking for the quality which is expected and inherent from a handbuilt bike frame. As other reviews noted on the Web, the bike is not only a work of art, but most importantly the ride is absolutely smooth as one would expect.

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