MY22 Bronson4 CC XX1 AXS RSV Gold Large 79e77d47 157c 47ef 983c C22e9d561e38

Bronson 4 MY22

2021 - 2022

If in doubt, take a Bronson out

The 150mm-travel bike can go deep on any landing and the VPP™ suspension design makes sure that there’s no wasted energy when heading back up for another go. If you value style at speed or want to have fun feeling fast, then mixed wheels (29” up front, 27.5” out back) are the right choice. The larger front wheel provides more traction and stability that’ll make you feel more confident squaring off the turns and diving for the inside lines. But a 27.5-inch tire in the rear means this bike still loves getting up on the back wheel and into the air.

Carbon C/CC
Front Travel (MM) 160
Rear travel (MM) 150
Taille de roues MX
Compra parti di ricambio

Specifiche

Sistema di sospensione VPP
Attacco deragliatore anteriore No compatibility
Serie sterzo Integrated (IS41/52)
Diametro reggisella 31.6mm
Diametro clamp 36.4mm
Interasse ammortizzatore 230mm
Corsa dell'ammortizzatore 60mm
Compatibilità della forcella 160mm
Scatola movimento centrale 73mm Threaded
Larghezza massima pneumatico 2.6"
Massima corona consentita 36t
Attacco borraccia 1
Dimensioni boccola anteriore dell'ammo 30x8 (standard bushing)
Dimensioni boccola posteriore dell'ammo 30x8 (roller bearing)
Attacco freno posteriore 180 PM
Offset della forcella 37mm (XS) | 44mm (S-XL)

Allestimenti

Seleziona un allestimento

Peso 32.89 lbs / 14.92 kg
Materiale Carbon C
Ammortizzatore FOX Float X Performance
Forcella RockShox Lyrik Select, 160mm
Deragliatore posteriore SRAM NX Eagle, 12spd
Comandi SRAM NX Eagle, 12spd
Pacco pignoni SRAM PG1230, 12spd, 11-50t
Catena SRAM NX Eagle, 12spd
Movimento centrale SRAM DUB 68/73mm Threaded BB
Serie Sterzo Cane Creek 10 IS Integrated Headset
Pneumatico posteriore Maxxis Minion DHR II 27.5"x2.4", 3C, EXO, TR
Pneumatico anteriore Maxxis Minion DHF 29"x2.5, 3C, MaxxGrip, EXO, TR
Liquido Stan's Sealant
Mozzo posteriore SRAM MTH 716, 15x110, Torque Cap, 32h
Cerchi RaceFace AR Offset 30 29" Rim f, 27.5" Rim r
Mozzo posteriore SRAM MTH 746, 12x148, 32h
Dischi Avid Centerline 200mm
Freni SRAM G2 R
Guarnitura SRAM Descendant Eagle 148 DUB 32t
Manubrio Burgtec Alloy Bar
Attacco manubrio Burgtec Enduro MK3
Sella WTB Silverado Race Saddle
Reggisella SDG Tellis Dropper, 31.6
Manopole/Nastro Santa Cruz House Grips
Escursione 160/150mm
Diametro ruote MX
Peso 32.37 lbs / 14.68 kg
Materiale Carbon C
Ammortizzatore RockShox Super Deluxe Select+
Forcella FOX 36 Float Performance, 160mm
Deragliatore posteriore SRAM GX Eagle, 12spd
Comandi SRAM GX Eagle, 12spd
Pacco pignoni SRAM XG1275 Eagle, 12spd, 10-50t
Catena SRAM GX Eagle, 12spd
Movimento centrale SRAM DUB 68/73mm Threaded BB
Serie Sterzo Cane Creek 40 IS Integrated Headset
Pneumatico posteriore Maxxis Minion DHR II 27.5"x2.4", 3C, EXO, TR
Pneumatico anteriore Maxxis Minion DHF 29"x2.5, 3C, MaxxGrip, EXO, TR
Liquido Stan's Sealant
Mozzo posteriore DT Swiss 370, 15x110, 6 bolt, 28h
Cerchi RaceFace AR Offset 30 29" Rim f, 27.5" Rim r
Mozzo posteriore DT Swiss 370, 12x148, XD, 28h
Dischi Avid Centerline 200mm/180mm
Freni SRAM Code R
Guarnitura SRAM GX Eagle 148 DUB 32t
Manubrio Burgtec Alloy Bar
Attacco manubrio Burgtec Enduro MK3
Sella WTB Silverado Medium Cromoly SL Fusion Saddle
Reggisella RockShox Reverb Stealth, 31.6
Manopole/Nastro Santa Cruz House Grips
Escursione 160/150mm
Diametro ruote MX
Peso 32.36 lbs / 14.68 kg
Materiale Carbon C
Ammortizzatore RockShox Super Deluxe Select+
Forcella FOX 36 Float Performance Elite, 160mm
Deragliatore posteriore Shimano XT M8100, 12spd
Comandi Shimano XT M8100, 12spd
Pacco pignoni Shimano XT M8100, 12spd, 10-51t
Catena Shimano XT, 12spd
Movimento centrale Shimano XT 68/73mm Threaded BB
Serie Sterzo Cane Creek 40 IS Integrated Headset
Pneumatico posteriore Maxxis Minion DHR II 27.5"x2.4", 3C, EXO, TR
Pneumatico anteriore Maxxis Minion DHF 29"x2.5, 3C, MaxxGrip, EXO, TR
Liquido Stan's Sealant
Mozzo posteriore Industry Nine 1/1, 110x15, 6 Bolt, 28h
Cerchi RaceFace ARC Offset 30 29" Rim f, 27.5" Rim r
Mozzo posteriore Industry Nine 1/1, 148x12, Microspline, 6 Bolt, 28h
Dischi Shimano XT RT86, Ice Tech, 203mm/180mm
Freni Shimano XT 8120
Guarnitura Shimano XT M8120 32t
Manubrio Santa Cruz 35 Carbon Bar, 800mm, 35mm Rise
Attacco manubrio Burgtec Enduro MK3
Sella WTB Silverado Medium Cromoly SL Fusion Saddle
Reggisella RockShox Reverb Stealth, 31.6
Manopole/Nastro Santa Cruz House Grips
Escursione 160/150mm
Diametro ruote MX
Peso 32.31 lbs / 14.66 kg
Materiale Carbon C
Ammortizzatore RockShox Super Deluxe Select+
Forcella FOX 36 Float Performance Elite, 160mm
Deragliatore posteriore Shimano XT M8100, 12spd
Comandi Shimano XT M8100, 12spd
Pacco pignoni Shimano XT M8100, 12spd, 10-51t
Catena Shimano XT, 12spd
Movimento centrale Shimano XT 68/73mm Threaded BB
Serie Sterzo Cane Creek 40 IS Integrated Headset
Pneumatico posteriore Maxxis Minion DHR II 27.5"x2.4", 3C, EXO, TR
Pneumatico anteriore Maxxis Minion DHF 29"x2.5, 3C, MaxxGrip, EXO, TR
Liquido Stan's Sealant
Mozzo posteriore Industry Nine 1/1, 110x15, 6 Bolt, 28h
Cerchi Reserve 30 29" Rim f, 27.5" Rim r
Mozzo posteriore Industry Nine 1/1, 148x12, Microspline, 6 Bolt, 28h
Dischi Shimano XT RT86, Ice Tech, 203mm/180mm
Freni Shimano XT 8120
Guarnitura Shimano XT M8120 32t
Manubrio Santa Cruz 35 Carbon Bar, 800mm, 35mm Rise
Attacco manubrio Burgtec Enduro MK3
Sella WTB Silverado Medium Cromoly SL Fusion Saddle
Reggisella RockShox Reverb Stealth, 31.6
Manopole/Nastro Santa Cruz House Grips
Escursione 160/150mm
Diametro ruote MX
Peso 31.14 lbs / 14.13 kg
Materiale Carbon CC
Ammortizzatore RockShox Super Deluxe Ultimate
Forcella FOX 36 Float Factory, 160mm
Deragliatore posteriore SRAM X01 Eagle, 12spd
Comandi SRAM X01 Eagle, 12spd
Pacco pignoni SRAM XG1295 Eagle, 12spd, 10-50t
Catena SRAM X01 Eagle, 12spd
Movimento centrale SRAM DUB 68/73mm Threaded BB
Serie Sterzo Cane Creek 40 IS Integrated Headset
Pneumatico posteriore Maxxis Minion DHR II 27.5"x2.4", 3C, EXO, TR
Pneumatico anteriore Maxxis Minion DHF 29"x2.5, 3C, MaxxGrip, EXO, TR
Liquido Stan's Sealant
Mozzo posteriore Industry Nine 1/1, 110x15, 6 Bolt, 28h
Cerchi RaceFace ARC Offset 30 29" Rim f, 27.5" Rim r
Mozzo posteriore Industry Nine 1/1, 148x12, XD, 6 Bolt, 28h
Dischi Avid Centerline 200mm/180mm
Freni SRAM Code RSC
Guarnitura SRAM X1 Eagle Carbon 148 DUB 32t
Manubrio Santa Cruz 35 Carbon Bar, 800mm, 35mm Rise
Attacco manubrio Burgtec Enduro MK3
Sella WTB Silverado Medium Stainless Fusion Saddle
Reggisella RockShox Reverb Stealth, 31.6
Manopole/Nastro Santa Cruz House Grips
Escursione 160/150mm
Diametro ruote MX
Peso 30.8 lbs / 13.97 kg
Materiale Carbon CC
Ammortizzatore RockShox Super Deluxe Ultimate
Forcella FOX 36 Float Factory, 160mm
Deragliatore posteriore SRAM X01 Eagle AXS, 12spd
Comandi SRAM GX AXS Shifter
Pacco pignoni SRAM XG1295 Eagle, 12spd, 10-50t
Catena SRAM X01 Eagle, 12spd
Movimento centrale SRAM DUB 68/73mm Threaded BB
Serie Sterzo Cane Creek 40 IS Integrated Headset
Pneumatico posteriore Maxxis Minion DHR II 27.5"x2.4", 3C, EXO, TR
Pneumatico anteriore Maxxis Minion DHF 29"x2.5, 3C, MaxxGrip, EXO, TR
Liquido Stan's Sealant
Mozzo posteriore Industry Nine 1/1, 110x15, 6 Bolt, 28h
Cerchi Reserve 30 29" Rim f, 27.5" Rim r
Mozzo posteriore Industry Nine 1/1, 148x12, XD, 6 Bolt, 28h
Dischi Avid Centerline 200mm/180mm
Freni SRAM Code RSC
Guarnitura SRAM X1 Eagle Carbon 148 DUB 32t
Manubrio Santa Cruz 35 Carbon Bar, 800mm, 35mm Rise
Attacco manubrio Burgtec Enduro MK3
Sella WTB Silverado Medium Stainless Fusion Saddle
Reggisella RockShox Reverb Stealth, 31.6
Manopole/Nastro Santa Cruz House Grips
Escursione 160/150mm
Diametro ruote MX
Peso 30.56 lbs / 13.86 kg
Materiale Carbon CC
Ammortizzatore RockShox Super Deluxe Ultimate
Forcella FOX 36 Float Factory, 160mm
Deragliatore posteriore SRAM XX1 Eagle AXS, 12spd
Comandi SRAM AXS Paddle Shifter
Pacco pignoni SRAM XG1295 Eagle Rainbow, 12spd, 10-50t
Catena SRAM XX1 Eagle, 12spd
Movimento centrale SRAM DUB 68/73mm Threaded BB
Serie Sterzo Chris King DropSet 3 Integrated Headset
Pneumatico posteriore Maxxis Minion DHR II 27.5"x2.4", 3C, EXO, TR
Pneumatico anteriore Maxxis Minion DHF 29"x2.5, 3C, MaxxGrip, EXO, TR
Liquido Stan's Sealant
Mozzo posteriore i9 Hydra, 15x110, 28h
Cerchi Reserve 30 29" Rim f, 27.5" Rim r
Mozzo posteriore i9 Hydra, 12x148, XD, 28h
Dischi Avid Centerline 200mm/180mm
Freni SRAM Code RSC
Guarnitura SRAM XX1 Eagle AXS 148 DUB 32t
Manubrio Santa Cruz 35 Carbon Bar, 800mm, 35mm Rise
Attacco manubrio i9 A35
Sella WTB Silverado Medium Ti Fusion Saddle
Reggisella RockShox Reverb Stealth, 31.6
Manopole/Nastro Santa Cruz House Grips
Escursione 160/150mm
Diametro ruote MX
Peso 6.72 lbs / 3.05 kg
Materiale Carbon CC

Geometria

Tutte le unità sono espresse in millimetri o gradi.
xs s m l xl
Reach (Hi/Lo) 405/402 430/427 455/452 475/472 500/497
Stack (Hi/Lo) 594/595 617/619 626/628 635/637 649/651
C. Angle de direction (Hi/Lo) 64.7°/64.5° 64.7°/64.5° 64.7°/64.5° 64.7°/64.5° 64.7°/64.5°
L. Longueur du tube de selle (Hi/Lo) 370/370 380/380 405/405 430/430 460/460
Front Center (Hi/Lo) 722/722 757/757 786/786 811/810 842/842
H. Hauteur du boitier (Hi/Lo) 344/341 344/341 344/341 344/341 344/341
BB Drop Front (Hi/Lo) 10/13 29/32 29/32 29/32 29/32
BB Drop Rear (Hi/Lo) 10/13 29/32 29/32 29/32 29/32
E. Empattement (Hi/Lo) 1149/1154 1188/1189 1221/1222 1249/1249 1284/1285
G. Longueur des bases (Hi/Lo) 427/432 431/432 435/436 438/439 442/443
K. Longueur du tube de direction (Hi/Lo) 110/110 100/100 110/110 120/120 135/135
M. Longueur de tube supérieur (Hi/Lo) 536/542 570/575 599/604 623/627 653/657
D. Angle du tube de selle (Hi/Lo) 77.6°/76.9° 77.2°/76.7° 77.1°/76.6° 76.9°/76.5° 76.7°/76.4°
Standover Height (Hi/Lo) 701/698 709/706 731/727 729/726 728/725

Guida alle taglie

X-Small
142cm 4'8" - 154cm 5'1" Reach: 405mm
Small
154cm 5'1" - 165cm 5'5" Reach: 430mm
Medium
165cm 5'5" - 175cm 5'9" Reach: 455mm
Large
175cm 5'9" - 185cm 6'1" Reach: 475mm
X-Large
185cm 6'1" - 193cm 6'4" Reach: 500mm

Setup delle sospensioni

Rockshox Lyrik Base 160
Peso del Rider (lbs) Peso del Rider (kg) Pressione (psi) Rebound (da chiuso)
100 45 45 11
120 54 55 10
140 64 65 9
160 73 75 9
180 82 85 8
200 91 95 7
220 100 105 7
240 109 115 6
260 113 120 6
Fox Float X Performance
Peso del Rider (lbs) Peso del Rider (kg) Pressione (psi) Sag Rebound (da chiuso)
100 45 105 28-32%, 16.5-19mm 12
120 54 125 28-32%, 16.5-19mm 11
140 64 145 28-32%, 16.5-19mm 11
160 73 165 28-32%, 16.5-19mm 10
180 82 185 28-32%, 16.5-19mm 10
200 91 205 28-32%, 16.5-19mm 10
220 100 225 28-32%, 16.5-19mm 9
240 109 245 28-32%, 16.5-19mm 9
260 118 265 28-32%, 16.5-19mm 8
Fox 36 Performance 160
Peso del Rider (lbs) Peso del Rider (kg) Pressione (psi) Rebound (da chiuso)
120 54 66 13
130 59 70 12
140 64 74 11
150 68 78 10
160 73 82 9
170 77 86 8
180 82 89 7
190 86 94 6
200 91 99 5
210 95 105 4
220 100 109 3
230 104 113 2
240 109 117 1
Rockshox Super Deluxe Select Plus
Peso del Rider (lbs) Peso del Rider (kg) Pressione (psi) Sag Rebound (da chiuso)
100 45 85 28-32%, 16.5-19mm 7
120 54 105 28-32%, 16.5-19mm 6
140 64 130 28-32%, 16.5-19mm 6
160 73 145 28-32%, 16.5-19mm 6
180 82 170 28-32%, 16.5-19mm 5
200 91 190 28-32%, 16.5-19mm 5
220 100 215 28-32%, 16.5-19mm 5
240 109 235 28-32%, 16.5-19mm 4
260 118 260 28-32%, 16.5-19mm 4
Fox 36 Performance Elite 160
Peso del Rider (lbs) Peso del Rider (kg) Pressione (psi) Rebound (L/H da chiuso) Compressione (L/H dal chiuso)
120 54 66 9,8 10,5
130 59 70 8,7 10,5
140 64 74 7,6 10,5
150 68 78 7,6 10,5
160 73 82 6,5 10,5
170 77 86 6,5 10,5
180 82 89 5,4 10,5
190 86 94 4,3 10,5
200 91 99 4,3 10,5
210 95 105 3,2 10,5
220 100 109 2,1 10,5
230 104 113 2,1 10,5
240 109 117 1,0 10,5
Rockshox Super Deluxe Select Plus
Peso del Rider (lbs) Peso del Rider (kg) Pressione (psi) Sag Rebound (da chiuso) Compressione (L/H dal chiuso)
100 45 85 28-32%, 16.5-19mm 7 -1/-1
120 54 105 28-32%, 16.5-19mm 6 -1/-1
140 64 130 28-32%, 16.5-19mm 6 -1/-1
160 73 145 28-32%, 16.5-19mm 6 -1/-1
180 82 170 28-32%, 16.5-19mm 5 -1/-1
200 91 190 28-32%, 16.5-19mm 5 -1/-1
220 100 215 28-32%, 16.5-19mm 5 -1/-1
240 109 235 28-32%, 16.5-19mm 4 -1/-1
260 118 260 28-32%, 16.5-19mm 4 -1/-1
Fox 36 Factory 160
Peso del Rider (lbs) Peso del Rider (kg) Pressione (psi) Rebound (L/H da chiuso) Compressione (L/H dal chiuso)
120 54 66 9,8 10,5
130 59 70 8,7 10,5
140 64 74 7,6 10,5
150 68 78 7,6 10,5
160 73 82 6,5 10,5
170 77 86 6,5 10,5
180 82 89 5,4 10,5
190 86 94 4,3 10,5
200 91 99 4,3 10,5
210 95 105 3,2 10,5
220 100 109 2,1 10,5
230 104 113 2,1 10,5
240 109 117 1,0 10,5
Rockshox Super Deluxe Ultimate
Peso del Rider (lbs) Peso del Rider (kg) Pressione (psi) Sag Rebound (da chiuso) Compressione (L/H dal centro)
100 45 85 28-32%, 16.5-19mm 7 -1/-1
120 54 105 28-32%, 16.5-19mm 6 -1/-1
140 64 130 28-32%, 16.5-19mm 6 -1/-1
160 73 145 28-32%, 16.5-19mm 6 -1/-1
180 82 170 28-32%, 16.5-19mm 5 -1/-1
200 91 190 28-32%, 16.5-19mm 5 -1/-1
220 100 215 28-32%, 16.5-19mm 5 -1/-1
240 109 235 28-32%, 16.5-19mm 4 -1/-1
260 118 260 28-32%, 16.5-19mm 4 -1/-1
Fox 36 Factory 160
Peso del Rider (lbs) Peso del Rider (kg) Pressione (psi) Rebound (L/H da chiuso) Compressione (L/H dal chiuso)
120 54 66 9,8 10,5
130 59 70 8,7 10,5
140 64 74 7,6 10,5
150 68 78 7,6 10,5
160 73 82 6,5 10,5
170 77 86 6,5 10,5
180 82 89 5,4 10,5
190 86 94 4,3 10,5
200 91 99 4,3 10,5
210 95 105 3,2 10,5
220 100 109 2,1 10,5
230 104 113 2,1 10,5
240 109 117 1,0 10,5
Rockshox Super Deluxe Ultimate
Peso del Rider (lbs) Peso del Rider (kg) Pressione (psi) Sag Rebound (da chiuso) Compressione (L/H dal chiuso)
100 45 85 28-32%, 16.5-19mm 7 -1/-1
120 54 105 28-32%, 16.5-19mm 6 -1/-1
140 64 130 28-32%, 16.5-19mm 6 -1/-1
160 73 145 28-32%, 16.5-19mm 6 -1/-1
180 82 170 28-32%, 16.5-19mm 5 -1/-1
200 91 190 28-32%, 16.5-19mm 5 -1/-1
220 100 215 28-32%, 16.5-19mm 5 -1/-1
240 109 235 28-32%, 16.5-19mm 4 -1/-1
260 118 260 28-32%, 16.5-19mm 4 -1/-1

Configuration de la transmission

Frame Size Flip Chip Setup Key Setup Cog 30T 32T 34T 36T
XSmall High B 7 114 114 116 116
Small High B 7 114 116 116 118
Medium High B 7 116 116 118 118
Large High B 7 116 116 118 118
XLarge High B 7 116 118 118 120
XSmall Low B 7 114 116 116 118
Small Low B 7 114 116 116 118
Medium Low B 7 116 116 118 118
Large Low B 7 116 116 118 118
XLarge Low B 7 116 118 118 120

Vues éclatées

Front Triangle, Headtube Badge, Glovebox
label part_number quantity name blurb torque
A 67-19217 1 Head Tube Badge Clean frame surface, center on headtube
B 30-22560 1 Shuttle Guard
C 30-23750 1 Shuttle Guard Mount
D 26-21249 2 M4x8 BHCS Apply grease to threads 0.65 Nm
E 30-23718 1 Downtube Protector For Bronson without Glovebox, use 30-21457
F 26-18382 2 M4x12 BHC Apply grease to treads 0.65 Nm
G 30-23225 2 Glovebox nut
H 26-25333 1 Glovebox bezel
I 26-23284 4 M3x8 BHCS Apply Loctite 242 to threads 0.5 Nm
J 26-22843 1 Glovebox lid
K 26-22358 1 M3x6 Apply Loctite 242 to threads 0.6 Nm
L 30-22620 1 Storage Bulkhead Install inside Downtube
M 34-20201 1 36.4 Seat Collar
Exploded Diagram of Bronson
Linkage Hardwear
label part_number quantity torque name blurb
A 26-20122 2 16 Nm M10x23 Screw Apply Loctite 242 to threads only, apply grease to shaft only
B 26-22461 2 20 Nm M8x45 Shock Bolt Apply Loctite 242 to threads
C 08-22343 1 20 Nm Pivot Axle M15x91 Apply Loctite 242 to threads only, apply grease to shaft only
D 08-16291 1 20 Nm Pivot axle M15x68.5 Apply Loctite 242 to threads only, apply grease to shaft only
E 08-16292 1 20 Nm Pivot axle M15x80.5 Apply Loctite 242 to threads only, apply grease to shaft only
F 26-15633 3 M6 Tapered Washer Apply grease to surface
G 26-11817 3 M6 Washer
H 26-15947 3 9 Nm M6x20 SHCS Apply Loctite 242 to threads
I 26-21452 1 M8x2 Flip Chip NDS Apply grease to surface
J 26-15532 1 M5x5 Set Screw Apply Loctite 242 to threads, titghten until flush
K 26-19207 2 Hose Grommet
Exploded Diagram of Bronson
Rear Axle, Shock Fender, Chainstay Protector
label part_number quantity name blurb torque
A 08-22209 1 Rear axle 12x173.7 Apply grease to shaft and threads
B 23-23491 1 SCB UDH Interchangeable with Sram UDH
C 26-23492 1 SCB UDH screw Reverse thread 20 Nm
D 30-20361 1 Chainstay Protector
E 26-15939 1 M3x12 BHCS Apply grease to treads 0.5 Nm
F 26-18382 2 M4x12 BHC Apply grease to treads 0.65 Nm
G 49-21567 1 Lower Link Fender
H 30-21453 1 Seatstay Protector
Exploded Diagram of Bronson
Upper Link
label part_number quantity name blurb
A 29-22534 1 Upper Link
B 11-12681 2 6900-2RS Bearing
C 26-15533 2 M10x3 Washer Apply grease to inner surface
D 11-12218 2 6902-2RS Max Bearing
E 26-11612 2 Bearing Dust Shield Apply grease to inner surface
F 26-17012 1 15x34.25 Bearing Spacer
Exploded Diagram of Bronson
Lower Link
label part_number quantity name blurb torque
A 29-22533 1 Lower Link
B 11-17708 4 6902-1ZR Bearing
C 26-11612 4 Bearing Dust Shield Apply grease to inner surface
D 26-19126 1 15x28 Bearing spacer
E 26-17013 1 15x40.25 Bearing Spacer
F 26-15532 1 M5x5 Set Screw Apply Loctite 242 to threads, titghten until flush
G 26-12678 1 M6 Grease Fitting 9 Nm
Exploded Diagram of Bronson

Documents

Se desideri ulteriori informazioni sulla tua bicicletta, consulta il nostro Santa Cruz Bicycles Owner's Manual