Bikes that live up to Marin's “Made For Fun” tag! The San Quentin range started with a bike developed from the Alcatraz jump bike, with 27.5 wheels, gears and a bit more room to make a hardcore hardtail trail bike. The current version pushes the hard core hardtail ethos a bit further - slacker head angle for descending confidence and a steeper seat tube for efficient climbing.

New to the range are 29" wheel options, for confidence inspiring roll-over.

Marin San Quentin Geometry & Sizing

Marin San Quentin 27.5 Geometry

140 mm Fork

Sizes in MM S M L XL
A: Stack 618 622.5 631.5 636
B: Reach 422 450 470 500
C: Head Tube
Angle
64° 64° 64° 64°
D: Head Tube
Length
110 115 125 130
E: Effective
Seat Tube Angle
77° 77° 77° 77°
F: Seat Tube
Length
310 340 375 414
G: Effective
Top Tube
564.70 593.70 615.80 646.80
H: BB Height 316 316 316 316
I: BB Drop -50 -50 -50 -50
J: Chainstay Length 425 425 425 425
K: Wheelbase 1173.40 1203.60 1228 1260.20
L: Standover 627.7 656.40 664.80 681
M: Fork Offset 37 37 37 37
Handlebar Width 780 780 780 780
Stem Reach 35 35 35 35
Seatpost Diameter 30.9 30.9 30.9 30.9
Seatpost Drop 125 150 170 200
Size Rider Height
S 158 cm - 165 cm
M 165 cm – 173 cm
L 173 cm – 180 cm
XL 180 cm – 188 cm

Marin San Quentin 29" Geometry

140 mm Fork

Sizes in MM S M L XL
A: Stack 632 636 645 650
B: Reach 422 450 470 500
C: Head Tube
Angle
64° 64° 64° 64°
D: Head Tube
Length
115 120 125 130
E: Effective
Seat Tube Angle
77° 77° 77° 77°
F: Seat Tube
Length
330 380 410 420
G: Effective
Top Tube
568 596 619 650
H: BB Height 316 316 316 316
I: BB Drop -50 -50 -50 -50
J: Chainstay Length 430 430 430 430
K: Wheelbase 1182 1212 1236 1268
L: Standover 650 683 688 695
M: Fork Offset 44 44 44 44
Handlebar Width 780 780 780 780
Stem Reach 35 35 35 35
Seatpost Diameter 30.9 30.9 30.9 30.9
Seatpost Drop 125 150 170 200
Size Rider Height
S 158 cm - 165 cm
M 165 cm – 173 cm
L 173 cm – 180 cm
XL 180 cm – 188 cm