background image

20835 11/16 † 85-000411_INST-C 

Hi there. Thanks for spending your hard-earned cash on this Surly product. Surly stuff is designed to be useful and durable. 
We’re confident it will serve you well for years to come. 

Surly Dummy Rails were designed to support our Dummy Deck and Dummy Bags. They fit all longtail frames  
(including the Big Dummy) using Xtracycle’s design standards.

Our Dummy Deck bolts directly to the Dummy Rails using M5 metric hardware, unifying and stiffening the entire system.  
We include 20mm-long stainless steel flanged button head machine screws with the Dummy Rails for this application. 

The threaded deck-attachment bosses, located along the tops of the Dummy Rails also serve as spacers. These 5mm-tall 
standoffs create space between the rails and the deck for bag straps, Junk Straps, webbing, and cords.

Threaded bosses, located at the rear of each rail, provide a mounting location for a water bottle cage or other accessories such 
as lights, cameras, action, pumps, flags, horns, light saber scabbards, disco balls, spittoons, cornucopias, etc.

Our Dummy Bags were designed to be fully compatible with our direct-mount rail and deck system. Non-Surly bags may  
or may not be compatible with our system, due to the placement of the threaded bosses on the rails. 

We highly recommend you have your Dummy Rails installed by a competent professional bicycle mechanic

.

  WARNING: Cycling can be dangerous. Bicycle products should be installed and serviced by a professional mechanic.  
Never modify your bicycle or accessories. Read and follow all product instructions and warnings including information  
on the manufacturer’s website. Inspect your bicycle before every ride. Always wear a helmet.

•   Check with your bicycle’s manufacturer to verify proper fit, mounting points, bicycle cargo load capacity, and 

compatibility for carrying cargo. Do not exceed the bicycle manufacturer permissible load

For additional safety information about all Surly products visit: surlybikes.com/safety

Dummy & Big Fat Dummy Rail Instructions

Surly Dummy Rails are compatible with Surly Dummy Bags, the Surly Dummy Deck, and the Surly Big Fat Dummy Deck. 
Surly Big Dummy Rails also fit all longtail frames using Xtracycle’s design standards.

NOTE: 

Big Fat Dummy Rails are designed to be compatible with a maximum wheel size of 26 x 5.25˝. Big Dummy Rails are 

designed to be compatible with a maximum wheel size of 26 x 2.5˝.

Dummy & Big Fat Dummy Rail Compatibility and Intended Use

RETAILER:

 These instructions MUST BE provided to the end user.

3

Jumps and drops 

are intended to 

be less than

61cm (24″)

ASTM F2043

INTENDED USE: CONDITION 3 

This is a set of conditions for operation of a bicycle that includes Condition 1 and Condition 2 as well as rough 
trails, rough unpaved roads, and rough terrain and unimproved trails that require technical skills. Jumps and 
drops are intended to be less than 61cm (24˝). Please see link to Bike Owner’s Manual on surlybikes.com/safety 
for complete list of riding condition descriptions. 

BIG DUMMY

BIG FAT DUMMY

RETAILER:

 These instructions MUST BE provided to the end user.

2

ASTM F2043

Drops are 

intended to be

limited to 15cm 

(6″) or less.

  

INTENDED USE: CONDITION 2 

This is a set of conditions for the operation of a bicycle that includes Condition 1 as well as unpaved and gravel 
roads and trails with moderate grades. In this set of conditions, contact with irregular terrain and loss of tire contact 
with the ground may occur. Drops are intended to be limited to 15cm (6˝) or less. Please see link to Bike Owner’s 
Manual on surlybikes.com/safety for complete list of riding condition descriptions.

  WARNING: FAILURE TO READ AND FOLLOW ANY OF THESE SAFETY WARNINGS COULD CAUSE A CRASH AND SERIOUS INJURY 

•   The maximum load weight for the Dummy Cargo System is 200 lb (90 kg) 75 lb per bag plus 50 lb max load for the deck. Check 

with other manufacturer’s systems to determine if they are compatible with the Dummy Cargo System maximum load weight. 
What you load and how you load it makes a big difference in how a bike like this handles! Use caution with unusually heavy, 
long,or large cargo

•   Do not modify the luggage carrier in anyway. Hardware included with the rack must be used. Do not use hardware 

included on your bike

•   Only carry live cargo if you are using Surly Rail Collars

•   Position reflectors and lights so that they are not obstructed when the rack is loaded

•   The bicycle may behave differently (particularly with regard to steering and braking) when the luggage carrier is loaded

•   Make sure your load is evenly balanced and secure before every ride ride; always secure loose straps or cords or anything else 

that may get caught in the wheel prior to riding

For additional safety information about all Surly products visit surlybikes.com/safety

Safety

20335_SUR_Big_Fat_Dummy_Rails_85-000411_INST_vf.indd   1

11/11/16   5:34 PM

Reviews: