Marin Rock Springs 1 Mountain Bike 2021 - Hardtail MTB
The Rock Springs family of mountain bikes are designed for the recreational mountain biker looking to explore the local singletrack or dirt paths. Utilizing our lightweight Series 1 aluminum alloy frames, 100mm travel suspension forks, and reliable Shimano drivetrains, these bikes are capable of tackling real trails and pushing your own boundaries. Size-specific 27.5” or 29” wheels, disc brakes, and 2.25” MTB tires mean comfort, traction, and control through any rough terrain. Get outside and explore with the Marin Rock Springs.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Series 1 6061 Aluminum, 27.5”/29" Wheels, Low Standover, 68mm BB shell, 135mm Forged Dropouts, Chainstay Mounted Disc Brakes |
| Fork | SR Suntour XCE Disc, 100mm Travel, Preload Adjustment, 46mm Offset |
| Headset | 44mm Zero Stack, 8mm Cone |
| Stem | Alloy, 31.8mm, 45mm |
| Bars | 31.8mm Riser, 20mm Rise, 740mm Width |
| Front Brake | Tektro M275 Hydraulic Disc, 160mm Rotor |
| Rear Brake | Tektro M275 Hydraulic Disc, 160mm Rotor |
| Brake Lever | Tektro M275 Hydraulic Disc |
| Front Mech | Shimano FD-TY700 |
| Rear Mech | Shimano TX-800, 8-Speed |
| Shifters | Shimano SLM315 Rapid Fire, 3x8-Speed |
| Speed | 24 |
| Rims | Double Wall Alloy |
| Front Hub | Forged Alloy, 6-Bolt Disc, 32H |
| Rear Hub | Forged Alloy, 6-Bolt Disc, 32H |
| Spokes | 15g Black Stainless Steel |
| Front Tyre | Schwalbe Smart Sam, K-Guard, 27.5/29x2.25" |
| Rear Tyre | Schwalbe Smart Sam, K-Guard, 27.5/29x2.25" |
| Seat Post | Alloy, 27.2mm |
| Saddle | Entity MTB |
| Chainset | Alloy Crank, Steel Chainrings, 42/34/24T |
| Bottom Bracket | Sealed Cartridge Bearings, Square Taper |
| Chain | KMC Z8 |
| Cassette | Shimano HG-200, 8-Speed, 11-32T |
| Pedals | Nylon Platform |
Mountain Bike Size Chart
|
Height
|
Bike Size
|
Mountain Bike Size
|
|
4’8” – 5’1”
143 – 155 cm
|
XXS
|
13” (33 cm)
|
|
5’1” – 5’4”
155 – 163 cm
|
XS
|
15” (38 cm)
|
|
5’4” – 5’7”
163 – 170 cm
|
S
|
16” (41 cm)
|
|
5’7” – 5’10”
170 – 178 cm
|
M
|
18” (46cm)
|
|
5’10” – 6’0”
178 – 183 cm
|
L
|
19” (48cm)
|
|
6’0” – 6’3”
183 – 191 cm
|
XL
|
20” (51 cm)
|
|
6’3” – 6’5”
191 – 196 cm
|
XXL
|
21” (53 cm)
|
|
6’5” – 6’9”
196 – 205 cm
|
XXXL
|
22” (56 cm)
|
* Mountain bikes are sized differently to road bikes. Typically, they are sized in inches as the first MTBs were produced in the USA. European brands like Lapierre and Haibike like to use centimetres for all their bikes. The measurements of their mountain bikes doesn’t match their road bikes but are like a simple conversion from the inches measurement. This is why we have included cm measurements in brackets for the Mountain bike column.
Read our bike size guide for more information on sizing.
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