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Alpinestars Pathfinder Base Shorts - w/o Chamois - Men's
Sale $31.48 - $62.96 $89.95 65% Off

Item # APN016M

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  • Red Black, 28 ($40.48)
  • Red Black, 34 ($49.47)
  • Red Black, 36 ($49.47)
  • Red Black, 38 ($44.97)
  • Black Cool Gray, 30 ($62.96)
  • Acid Yellow Abyss Blue, 28 ($35.98)
  • Acid Yellow Abyss Blue, 32 ($49.47)
  • Acid Yellow Abyss Blue, 34 ($44.97)
  • Acid Yellow Abyss Blue, 36 ($31.48)
  • Acid Yellow Abyss Blue, 38 ($35.98)
  • Acid Yellow Black, 28 ($40.48)
  • Acid Yellow Black, 30 ($40.48)
  • Acid Yellow Black, 36 ($44.97)
  • Acid Yellow Black, 40 ($40.48)
  • Black Royal Blue, 38 ($44.97)
  • Black Royal Blue, 40 ($40.48)
  • Dark Shadow Black, 40 ($44.97)
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Item # APN016M


Everywhere's a trail.

When the trail gets steep, fast, and gnarly, the Alpinestars Pathfinder Men's Base Shorts without Chamois keep your legs covered, protected, and feeling fly. In addition to being rugged, the Pathfinder's ripstop polyester fabric is seriously stretchy — so you can pedal like a maniac — and sewn with a multi-panel construction that's designed to improve ergonomics and fit. A stretchy mesh panel in the back further improves mobility and cooling, and the seamless seat won't chap your ass or rip in the middle of a hard ride.

Inside the waist band, a soft mesh panel stays comfortable against your skin while the adjustable waist tabs make it easy to loosen the Pathfinder up in the event you've put down a few too many brats around the campfire last night. The shorts' flat snaps don't dig into your waist when you're bent over the bars, and a zippered thigh pocket lets you stash an energy gel or multitool if you're out for a quick rip and want to leave the pack behind.

Tech Specs

polyester ripstop
2 hand, 1 zippered side
hook-and-loop tabs
rear mesh vents
Recommended Use:
mountain bike
Manufacturer Warranty:
21 days

Size Chart


Men's Apparel

35 - 36in

(88.9 - 91.4cm)

37 - 39in

(94 - 99.1cm)

40 - 41in

(101.6 - 104.1cm)

42 - 44in

(106.7 - 111.8cm)

45 - 47in

(114.3 - 119.4cm)


30 - 31in

(76.2 - 78.7cm)

32 - 33in

(81.3 - 83.8cm)

34 - 35in

(86.4 - 88.9cm)

36 - 38in

(91.4 - 96.5cm)

39 - 41in

(99.1 - 104.1cm)


40 - 41in

(101.6 - 104.1cm)

42 - 43in

(106.7 - 109.2cm)

44 - 45in

(111.8 - 114.3cm)

46 - 48in

(116.8 - 121.9cm)

49 - 51in

(124.5 - 129.5cm)


19 - 20in

(48.3 - 50.8cm)

21 - 22in

(53.3 - 55.9cm)

23 - 24in

(58.4 - 61.0cm)

24 - 25in

(61 - 63.5cm)

26 - 27in

(66 - 68.6cm)











How to Measure:
For best results, take measurements over your underwear.
Measure under your arms, around the fullest part of your chest.
Measure around your natural waistline, keeping the tape a bit loose.
Measure around the fullest part of your body at the top of your legs.
Using pants that fit well, measure the crotch seam to the bottom of the leg.

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Great all-mountain shorts

    High quality, well-made, strong fabrics, well ventilated.

    I have been really impressed by the quality and QC of Alpinestars MTB gear. This stuff is up there with the best quality MTB kit made (Troy Lee Design, Pearl Izumi). Alpinestars is an Italian brand with history in moto. Designed in Italy. Cool.

    Matches great with the excellent Alpinestars Drop 2 short-sleeve jersey (or long-sleeve).

    Wear with quality technical (non-cotton) boxer-briefs underneath or some good MTB liner-shorts from Pearl Izumi or Fox.

    Avg. ride time: 1h 25m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.


    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: 34

    I really like the fit and material feel to these shorts. They have just the right amount of stretch to them, are lightweight, and the waist cinches work well. All 3 pockets are quite deep and large. You can fit quite a bit of gear inside each. I was kind of hoping for a smaller stash pocket for a car key, but that is just being picky. The shorts sit right at your knee, and a bit more baggy than tight, which I would say would pay well between either an all mountain or XC type short. The size seemed true, which I sized up a bit on and utilized the waist cinches.

    The material is lightweight and breathable, but the downside of that is the material can show what you have going on underneath. In my case, a pair of Fox Evolution Pro Bib Liners. In my personal experience, I would recommend these shorts without the liner, as I found it to not be very comfortable. Recommend pairing with another liner or bib liner.