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RACEDAY 

PORTABLE

Trainer 

Part# 7079860

Customer Service: 1-800-456-2355

Blackburndesign.com

Printed in Taiwan

TELESCOPING LEG

STEP 1:  Prior to installing the bicycle onto the trainer, decide if the front 

axle is a 9mm skewer, a 12mm thru axle or 15 mm thru axle.

STEP 2: You will also need to check if the front hub width is 100mm or 

110mm Boost. (Figure 2)

STEP 3: Loosen the connector dial by turning counter-clockwise and 

lengthen the telescoping connector to fit the wheelbase of your bicycle. 

Tighten the connector dial once you have the correct extended length.

STEP 4: Pull the leg out from the base until you hear an audible “snap.” 

The leg will be locked into place. 

STEP 5: Adjust the length of the legs so the bike is as level as possible or 

comfortable as possible when mounted on the trainer by pushing the 

spring button and moving the telescoping legs up or down.

STEP 6: Place rear wheel of bicycle onto rollers. If your front axle is: 

A.  9mm skewer (Figure 3A), remove the front wheel and skewer.  

Position the front fork of the bicycle onto the fork mount of the trainer. 

Attach the fork of the bicycle to the fork mount of the trainer using the 

included quick release skewer. Follow your bicycle/wheel manufactur-

er recommendations for removing and installing quick releases or have 

a qualified bicycle shop replace it for you.

B.  12mm thru axle – (Figure 3B). Remove quick release skewer from 

trainer mount. Remove the 100/110mm endcap adapters. Remove the 

9mm spacer in the mount and replace with the 12mm yellow spacer 

(included separately in a bag). Install the 12mm yellow spacer into mount 

and then cap off the ends with the 100/110 adapter. Remove the front 

wheel of the bicycle. Position the front fork of the bicycle onto the fork 

mount of the trainer. Attach fork using your 12mm thru axle and tighten.

C.  15mm thru axle - (Figure 3C). Remove quick release skewer from 

trainer mount. Remove the 100/110mm endcap adapters from mount. 

Remove the 9mm spacer in the mount. Press the 100/110mm endcap 

adapters onto each side of the mount.  Remove the front wheel of the 

bicycle. Position the front fork of the bicycle onto the fork mount of the 

trainer. Attach fork using your 15mm thru axle and tighten.

STEP 7: Carefully get on the bicycle and start pedaling slowly. Do not 

make any sudden moves until you are sure the bicycle is securely 

mounted onto the trainer.

STEP 8: When finished using trainer, fold the trainer to its smallest 

position by doing the following:

A.  Shorten telescoping legs by pushing on the spring button and 

pushing the leg up close to the base of the trainer.  Next, fold in the leg 

struts by pushing on the leg strut spring button and pushing the legs in.

B. Next, shorten the connector by turning the connector dial 

counter clockwise.

C. Fold the rollers up to the base for smallest footprint. (Figure 4)

Optional: Use rubber straps installed on trainer to secure.

FORK MOUNT

LEG STRUTS

TELESCOPING LEG

SPRING BUTTONS

LEG STRUT

SPRING BUTTONS

CONNECTOR DIAL

B

TELESCOPING CONNECTOR

FLUID ROLLERS

HUB WIDTH: Your trainer has been pre-configured to accommodate a 100mm 

front hub width  vs 110 mm hub.  Most road and mountain bikes are 100mm. 

“Boost 110” hub configuration requires 110mm spacing. Flip adapter to 

change from 100 mm hub width to 110 mm.

THE QUICK CHANGE SPACERS ACCOMODATE THE FOLLOWING AXLES:

A. 9 mm quick release: 9 mm quick release provided 

B. 12 mm thru axle: 12 mm thru axle use on the bike

C. 15 mm thru axle: Thru axle use on the bike (no spacer)

NOTE: Your trainer has been pre-configured to accommodate a 9mm 

diameter front hub.

FIGURE 3: AXLE ACCOMODATION

FIGURE 2: HUB WIDTH 

LEG

100MM

110MM

ADAPTER

A.

B.

C.

FIGURE 1: ADJUSTING LENGTH

Visit us at blackburndesign.com for product updates.

Visitez le site Internet blackburndesign.com pour obtenir les mises à jour sur les produits.

Informationen über Produktverbesserungen finden Sie unter www.blackburndesign.com

 WARNING: 

FAILURE TO FOLLOW TRAINER SETUP AND BICYCLE 

 

INSTALLATION INSTRUCTIONS PROPERLY MAY RESULT IN POTENTIAL 

DANGER TO THE USER. USE TRAINER AWAY FROM CHILDREN AND PETS AS 

MOVING PARTS CAN BE DANGEROUS TO THEM DURING NORMAL USE.  

AVERTISSEMENT :

 SI LES INSTRUCTIONS D'INSTALLATION ET L'ENTRAÎNEUR 

ET DU VÉLO NE SONT PAS APPLIQUÉES CORRECTEMENT, CELA PEUT CRÉER 

UN DANGER POTENTIEL POUR L'UTILISATEUR. GARDEZ LES ENFANTS ET 

LES ANIMAUX DE COMPAGNIE À DISTANCE DE L'ENTRAÎNEUR CAR DES 

PIÈCES MOBILES PEUVENT ÊTRE DANGEREUSES POUR EUX PENDANT LE 

FONCTIONNEMENT NORMAL.  

WARNUNG: 

BEI NICHTBEACHTUNG DER INSTALLATIONSANWEISUNGEN  UND 

AUFSTELLUNG DES TRAINERS UND FAHRRADS KANN GGF. FÜR DEN BENUTZER 

GEFÄHRLICH SEIN. BENUTZEN SIE DEN TRAINER AUßER REICHWEITE VON 

KINDERN UND HAUSTIEREN, DA DIE BEWEGLICHEN TEILE GEFÄHRLICH FÜR 

SIE SEIN KÖNNEN.

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