Owner’s Manual
®
Installation Instructions
It is extremely important that your ROCK SHOX fork is installed correctly by a
qualified technician with proper tools. Improperly installed forks are extremely dangerous and
can result in severe injuries.
À
1. Remove the existing fork and lower headset race, cut ROCK SHOX steerer tube to length
using the original fork for measurement. Note: Do not thread down ROCK SHOX steerers
more than 15mm since the tube diameter is reduced below that point.
2. Install the headset race (Ø 26.4 for 1” steerers) firmly against the top of the fork crown.
Install the fork assembly on the bike. Make sure there are sufficient threads to properly lock
the headset in place. On threadless steerers (Aheadset design) make sure there is sufficient
length to properly clamp stem (refer to stem manufacturer’s instructions). Adjust the headset
so no play or drag is felt.
3. Install the brakes as per manufacturer’s
instructions and adjust brake pads properly.
4. On threaded steerers, insert stem to a minimum
depth according to CPSC and JIS standards. The stem
must be inserted to a minimum engaging length not
less than 2.5 times the stem diameter from the
lowest end of the stem (not wedge, see Figure 1).
5. Fit a brake cable to the ROCK SHOX fork brace
mount. Do not route the cable through the stem or
any other mounts or cable stops! The cable should
Figure 1
make a direct route from the brake lever to the ROCK
SHOX fork brace mount and be able to freely move up and down 50mm with the suspension
movement. It may be necessary to install a whole new cable.
6. TIRE CLEARANCE: Maximum tire size is 2.2" wide or 335mm radius. Be sure to check
this radius whenever you change tires. Exceeding this maximum will cause the tire to jam
against the crown when the forks are fully compressed. An easy way to check tire
clearance is to remove the elastomers from both fork tubes (see tuning section) and
compress the legs fully. A minimum clearance of 1/4" (6.4mm) is necessary. QUADRA 21R:
The upper tubes must always be fully engaged in the crown. The upper tubes must not
extend above the crown more than 3mm.
7. Check the clearance between the down tube of the bike and the ROCK SHOX adjuster
knobs and/or the cable mount. If possible, adjust the handlebar height so that the handlebar
will hit the top tube before the ROCK SHOX cable mount hits the down tube, as long as there
is no conflict with stem engagement (see Figures 2 & 4).
IF YOU NEED ASSISTANCE, CALL ROCKSHOX AT 408.435.7469.
Tuning: Different types of elastomers are available from your dealer. You can custom tune
your forks by changing the stiffness of the elastomer to get the type of ride you desire. The
Q5 stock elastomer is medium in stiffness. Available options are: Stiff, Soft and Cold Weather
for temperatures below 35°F (1°C). The Q21R stock
microcellular spring setting is 4 firm (blue), 1 soft (red), and
1 solid per leg. (See Figure 2)
To change spring rate—Quadra 5: Simply unscrew the
top cap with a 22mm wrench and pull out the stock
elastomer (See Figure 3). Grease the entire new elastomer
Solid
with light-duty grease such as Judy Butter, Finish Line,
Pedro’s, or others (do not use Lithium grease). Reinstall the
adjuster cap, but do not torque the adjuster cap (the cap
Firm (blue)
should just be snug against the upper tube. Quadra 21R:
To tune the MCU spring, unscrew the top cap assembly.
Remove spring stack. By using different combinations of soft
(red), firm (blue) and solid springs, almost any spring rate
you desire is possible. Greasing the MCU springs is not
Soft (red)
required. Reinstall the adjuster
cap spring stack assembly (the
Figure 2 Q21R
cap should just be snug against
the upper tube–see Figure 3). It may be necessary to loosen the
4mm crown bolts to remove adjuster cap. Retighten crown bolts
to 60in./lbs. (6.8N/m), alternating between top and bottom
bolts to ensure equal torque. Check upper tube engagement (see
step 6 installation instructions).
Figure 3 Q5, Q21
F
O
R
C
E
(lbs.)
A
B
C
200
150
100
50
0
standard
D
E
0
15
30
45
T R A V E L (MM)
A
B
C
D
E
= 5 firm/1 solid
= 4 firm/1 soft/1 solid
= 3 firm/2 soft/1 solid
= 4 firm/2 soft
= 3 firm/3 soft
60
Adjusting Compression Stiffness (Preload):
The preload of your fork is externally adjustable by turning
the adjuster knobs located on the top of the crown (See
Figure 4 & 5). There are approximately 4 turns of
adjustment. Both sides should be adjusted equally from the
full soft position (fully counterclockwise). Dial in the ride
quality you like best.
Maintenance: RockShox Quadra forks require routine
maintenance. After each ride, clean and dry the outside of
the fork. A general service (cleaning and greasing
elastomers and bushings) should be made by a qualified
technician at approximately 200 hours of riding, or more
frequently if you ride in dusty or muddy conditions. Also,
after a fall or crash, you’ll need a general inspection of your
brakes, the cable hanger, and the overall fork to see if there
is any sign of damage.
Performance Tips: Here are some tips for keeping your
Quadra feeling smooth. Q5: If the fork becomes very stiff or
“sticky” feeling, unscrew the top cap with a 22mm wrench
and apply a light-duty grease to all surfaces of the elastomer
(do not use a Lithium grease). All: To maintain plushness,
occasionally pull up the bottom of the accordion style fork
boots and apply a few drops of light-duty lube, such as light
oil or Teflon chain lube (See Figure 6). Non-lubricating rust
preventative sprays, such as WD-40, are not recommended.
Figure 4 Q5, Q21R
Figure 5 Q5, Q21R
Warranty
ROCKSHOX, INC. WARRANTS ITS FORKS FOR A PERIOD OF ONE YEAR FROM ORIGINAL DATE OF PURCHASE TO BE
FREE FROM DEFECTS IN MATERIALS OR WORKMANSHIP. ANY ROCKSHOX FORK THAT IS RETURNED TO THE FACTORY
AND IS FOUND BY ROCKSHOX TO BE DEFECTIVE IN MATERIALS OR WORKMANSHIP WILL BE REPAIRED OR REPLACED
AT THE OPTION OF ROCKSHOX, INC. THIS WARRANTY IS THE SOLE AND EXCLUSIVE REMEDY. ROCKSHOX SHALL
NOT BE HELD LIABLE FOR ANY INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES.
THE WARRANTY DOES NOT APPLY TO FORKS WHICH HAVE NOT BEEN PROPERLY INSTALLED AND ADJUSTED ACCORDING
TO ROCKSHOX INSTALLATION INSTRUCTIONS. THE WARRANTY DOES NOT COVER ANY FORK THAT HAS BEEN SUBJECT
TO MISUSE OR WHOSE SERIAL NUMBER HAS BEEN ALTERED, DEFACED OR REMOVED. THIS WARRANTY DOES NOT
COVER PAINT DAMAGE OR MODIFICATIONS TO FORKS. PROOF OF PURCHASE IS REQUIRED.
WARRANTY REPAIR
IF FOR ANY REASON IT SHOULD BE NECESSARY TO HAVE WARRANTY WORK DONE, RETURN THE FORK TO THE PLACE
OF PURCHASE. IN THE USA, DEALERS SHOULD CALL FOR A RETURN AUTHORIZATION (RA#) PRIOR TO RETURNING
PRODUCT. PRODUCTS RETURNED FOR INSPECTION MUST BE SENT FREIGHT PREPAID TO:
ROCKSHOX, INC.
401 CHARCOT AVE.
SAN JOSE, CA 95131
408.435.7469
FAX 408.435.7468
CUSTOMERS IN COUNTRIES OTHER THAN THE USA SHOULD CONTACT THEIR DEALER OR LOCAL DISTRIBUTOR.
À
F
O
R
C
E
(Kg)
A
B
C
90
70
50
30
0
standard
D
E
0
15
30
45
D É B A T T E M E N T (MM)
A
B
C
D
E
60
Abb. 4 Q5, Q21R
Abb. 5 Q5, Q21R
Abb. 6
À
Firmes (azul)
A
B
C
90
70
50
30
0
standard
D
E
0
15
30
C O R S A (MM)
45
A
B
C
D
E
= 5 firmes/1 sólid
= 4 firmes/1 sauves/1 sólid
= 3 firmes/2 sauves/1 sólid
= 4 firmes/2 sauves
= 3 firmes/3 sauves
60
Cuadro 4 Q5, Q21R
Garantía:
ROCKSHOX, INC. GARANTIZA POR UN PERIODO DE UN AÑO A PARTIR DE LA FECHA DE
COMPRA ORIGINAL, QUE SUS HORQUILLAS ESTÁN LIBRES DE DEFECTOS TANTO EN
MATERIALES COMO EN SU MANUFACTURA. CUALQUIER HORQUILLA ROCKSHOX QUE SEA
DEVUELTA A LA FÁBRICA Y QUE ROCKSHOX DETERMINE ES DEFECTUOSA EN MATERIALES O
MANUFACTURA, SERÁ REPARADA O REEMPLAZADA A OPCIÓN DE ROCKSHOX, INC. ESTA
GARANTÍA ES REMEDIO ÚNICO Y EXCLUSIVO. ROCKSHOX NO ASUMIRÁ RESPONSABILIDAD
POR NINGÚN DAÑO INDIRECTO, ESPECIAL, O CONSECUENTE.
LA GARANTÍA NO CUBRE A HORQUILLAS QUE NO HAN SIDO INSTALADAS CORRECTAMENTE Y
AJUSTADAS DE ACUERDO CON LAS INSTRUCCIONES DE INSTALACIÓN DE ROCKSHOX. LA
GARANTÍA NO CUBRE HORQUILLA ALGUNA QUE HAYA SIDO MAL UTILIZADA O CUYO NÚMERO
DE SERIE HAYA SIDO ALTERADO, BORRADO O ELIMINADO. ESTA GARANTÍA NO CUBRE DAÑOS
A LA PINTURA O MODIFICACIONES DE LAS HORQUILLAS. SE EXIGE COMPROBANTE DE
COMPRA.
REPARACIONES BAJO GARANTÍA
SI POR ALGÚN MOTIVO RESULTA NECESARIO HACER REPARACIONES BAJO LA GARANTÍA,
DEVUELVA LA HORQUILLA AL SITIO DE COMPRA. CLIENTES EN PAISES FUERA DE ESTADOS
UNIDOS DE AMÉRICA DEBEN COMUNICARSE CON SU VENDEDOR O DISTRIBUIDOR LOCAL.
Solide
Figura 3 Q5, Q21
F
O
R
C
E
(Kg)
A
B
C
90
70
50
30
0
standard
D
E
0
15
30
C O R S A (MM)
45
60
A = 5 molle salde/1 solida
B = 4 molle salde/
1 morbide/1 solida
C =3 molle salde/
2 morbide/1 solida
D = 4 molle salde/2 morbide
E = 3 molle salde/3 morbide
Figura 4 Q5, Q21R
Figura 5 Q5, Q21R
Figura 6
Garanzia
ROCKSHOX, INC. GARANTISCE CONTRO DIFETTI DI MATERIALE O DI PRODUZIONE DELLA FORCELLA PER IL PERIODO DI
UN ANNO DALLA DATA ORIGINALE DI ACQUISTO. QUALSIASI FORCELLA ROCKSHOX RISPEDITA IN FABBRICA E RITENUTA
DIFETTOSA DI MATERIALE O DI PRODUZIONE, SARÀ RIPARATA O SOSTITUITA FACOLTATIVAMENTE DA ROCKSHOX.
QUESTA GARANZIA È L'UNICO ED ESCLUSIVO RIMEDIO PER L'UTENTE. ROCKSHOX NON SARÀ RITENUTA RESPONSABILE
PER QUALUNQUE DANNO INDIRETTO O ECCEZIONALE.
LA GARANZIA NON È APPLICABILE ALLE FORCELLE CHE NON SIANO STATE INSTALLATE CORRETTAMENTE E REGOLATE
SECONDO LE ISTRUZIONI PER L'INSTALLAZIONE DI ROCKSHOX. LA GARANZIA NON RIGUARDA FORCELLE CHE SIANO
STATE ADOPERATE IN MANIERA NON IDONEA O IL CUI NUMERO DI SERIE SIA STATO ALTERATO, SFIGURATO, O
RIMOSSO. QUESTA GARANZIA NON RIGUARDA DANNI ALLA VERNICE O MODIFICHE ALLE FORCELLE. SI RICHIEDE LA
PROVA DI ACQUISTO.
PER QUALUNQUE MOTIVO, FOSSE NECESSARIO USUFRUIRE DEL SERVIZIO DI ASSISTENZA PREVISTO DALLA
GARANZIA, RISPEDIRE LA FORCELLA AL LUOGO DI ACQUISTO. I CLIENTI CHE ABITANO IN PAESI DIVERSI DAGLI STATI
UNITI D'AMERICA DEVONO CONTATTARE IL LORO RAPPRESENTANTE O DISTRIBUTORE LOCALE.
À
Solide
Molle Salde
(blu)
F
O
R
C
E
(Kg)
A
B
C
90
70
50
30
0
standard
D
E
0
15
30
C O R S A (MM)
45
60
A = 5 molle salde/1 solida
B = 4 molle salde/
1 morbide/1 solida
C =3 molle salde/
2 morbide/1 solida
D = 4 molle salde/2 morbide
E = 3 molle salde/3 morbide
Figura 4 Q5, Q21R
Figura 5 Q5, Q21R
Garantie
ROCKSHOX, INC. GARANTIT SES FOURCHES, PIÈCES ET MAIN D'OEUVRE, POUR UNE DURÉE D'UN AN À COMPTER
DE LA DATE D'ACHAT CONTRE TOUT VICE DE FABRICATION. TOUTE FOURCHE ROCKSHOX RENVOYÉE À L'USINE ET
PRÉSENTANT UN TEL VICE DE FABRICATION EN PIÈCES OU MAIN D'OEUVRE SERA RÉPARÉE OU ÉCHANGÉE, À LA
DISCRÉTION DE ROCKSHOX, INC. CETTE GARANTIE EST LE RECOURS UNIQUE ET EXCLUSIF. ROCKSHOX NE SAURAIT
ÊTRE TENU RESPONSABLE DE TOUT DOMMAGE INDIRECT, SPÉCIAL OU FORTUIT.
CETTE GARANTIE NE COUVRE PAS LES FOURCHES N'AYANT PAS ÉTÉ CORRECTEMENT INSTALLÉES CONFORMÉMENT AUX
DIRECTIVES DE MONTAGE DE ROCKSHOX. CETTE GARANTIE NE COUVRE PAS LES FOURCHES UTILISÉES DANS UN BUT
AUTRE QUE CELUI POUR LEQUEL ELLES SONT SPÉCIFIQUEMENT CONÇUES, OU DONT LE NUMÉRO DE SÉRIE A ÉTÉ
DETÉRIORÉ, OU SUPPRIMÉ. CETTE GARANTIE NE COUVRE NI LES DOMMAGES À LA PEINTURE NI LES FOURCHES
MODIFIÉES. UNE PIÈCE JUSTIFICATIVE D'ACHAT EST EXIGÉE.">
