Rocket S
prime
Downhill
Rocket S is a carbon downhill mountain bike (2023), by Prime, from the Rocket lineup. This setup will suit riders looking for a balanced off-road setup, leaning toward a balanced riding position, with a surface profile that is more at home in gravity-focused bike park riding. Standout strengths from the metrics include capable suspension support for rougher terrain and a balanced ride feel between comfort and directness. That said, the trade-off to keep in mind is less emphasis on outright speed than speed-focused builds and more of a flat-to-rolling terrain bias than a climbing focus. Use MatchBikes.com to compare this bike with nearby downhill options.
5.9
Rating

+4
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Score Summary
Performance
6.7
Value
1.3
Fit
7.5
Performance
Built for speed and efficiency
Speed
3.8
Very Low
Climbing Efficiency
1.2
Flatlander
Suspension
10.0
Extreme rough-terrain ready
Fit
Dialed-in Fit & Comfort
Riding Position
6.8
Balanced
Fit Flexibility
5.8
Moderately Adjustable
Ride Comfort
8.7
Balanced
Value
Value for Money
1.3
Overpriced
Surface Range
Bike ParkSpecifications
General
Brand
prime
Model
Rocket S
Year
2023
Price
$7,999
Category
Mountain
Sub Category
Downhill
Groupset
GX
Wheels
29"
Frame
Frame
PRIME ROCKET 29” | 195 mm VIP COMPOSITES S.H.R.E.D DYNAMICS FULL CARBON FIBER FRAME INCLUDING FRONT TRIANGLE | REAR TRIANGLE UPPER LINK | LOWER LINK 225 x 75 mm SHOCK BSA 83 mm BOTTOM BRACKET 12 x 157 mm BOOST DH REAR AXLE AERO SEATPOST
Suspension Fork
ÖHLINS DH 38 M.1 29” | 200 MM | TTX18 TWIN TUBE CARTRIDGE HSC, LSC, REBOUND | AIR PRELOUD | RAMP UP CHAMPER BOOST 20 X 110 MM | 54 MM RAKE
Rear Shock
ÖHLINS TTX 22 M.2 COIL 411 LB/IN (M) | 457 LB/IN (L) | 502 LB/IN (XL) HSC, LSC, REBOUND 225 x 75 mm
Suspension Type
Full
Drivetrain
Shift Levers
SRAM GX DH 7 Speed DH
Rear Derailleur
SRAM GX DH 7 Speed DH
Cassette
SRAM GX DH PG - 720 DH | 11 - 25 T | 7 Speed DH
Crank
SRAM GX DH ALLOY 165 mm | 34T | DUB
Bottom Bracket
SRAM DUB BSA | 83 mm
Chain
SRAM PC - 1130 7 Speed DH
Wheels
Front Hub
DT SWISS 240 20 x 110 mm | 6B
Rear Hub
DT SWISS 240 12 x 157 mm | 6B Ratchet System 18 SL | ASL
Rims
DT SWISS FR 1950 CLASSIC 29” | 30 mm internal rim width 32 Spokes
Tires
Front: MAXXIS ASSEGAI 29” x 2.50 | DH CASING | MAXXGRIP, Rear: MAXXIS ASSEGAI 29” x 2.50 | DH CASING | MAXXGRIP
Brakes
Brake Type
Hydraulic Disc
Brake Description
Front: SRAM CODE RSC 203 mm, Rear: SRAM CODE RSC 203 mm
Cockpit
Stem
RENTHAL INTEGRA 35 45 mm (M) | 50 mm (L) | 50 mm (XL) length 0 mm rise
Handlebar
RENTHAL FATBAR 35 800 mm width | 30 mm rise
Grips
ODI AG-2 LOCK-ON | 135 mm
Seat
Saddle
SDG BEL AIR 2.0 PRIME EDITION
Seatpost
PRIME AERO CARBON FIBER
Geometry
| Measurement | MD | LG | XL |
|---|---|---|---|
| Stack Reach Ratio | 1.38 mm | 1.33 mm | 1.28 mm |
| Bottom Bracket Height | 356 mm | 356 mm | 356 mm |
| Front Center | 825 mm | 848 mm | 875 mm |
| Rake | 44 mm | 45 mm | 45 mm |
| Trail | 138 mm | 136 mm | 136 mm |
| Stack | 626 mm | 630 mm | 635 mm |
| Reach | 453 mm | 473 mm | 498 mm |
| Seat Tube Length | 415 mm | 435 mm | 455 mm |
| Head Tube Angle | 63.5 ° | 63.5 ° | 63.5 ° |
| Head Tube Length | 110 mm | 115 mm | 120 mm |
| Chainstay Length | 448 mm | 448 mm | 448 mm |
| Wheelbase | 1273 mm | 1296 mm | 1323 mm |
| Bottom Bracket Drop | -15 mm | -15 mm | -15 mm |
| Standover Height | 774 mm | 770 mm | 768 mm |
| Wheels | 29" | 29" | 29" |
| Rider Min Height | 168 cm | 178 cm | 188 cm |
| Rider Max Height | 182 cm | 192 cm | 202 cm |




























































