• Shop
  • Show all categories
  • Hide categories
  • Gift Cards
  • Brands
  • Hire & Workshop
  • Advice
Item has been added to the Cart
This bike must be picked up from an approved store. Due to warranty regulations, Mongoose bikes must be assembled by a qualified bike mechanic - this is an international policy for Mongoose bikes.
This item has been added to your wishlist

Login or Register for an account now to be among the first to know once this item arrives.

By adding the product to your wishlist & loginig in you will be notified by email when the product arrives in stock.

In Store Availability

Mongoose 2021 Tyax Sport MTB 27.5

Hardtail Mountain Bikes
or /week for months Finance Now logo

Product Details

This bike must be picked up from an approved store. Due to warranty regulations, Mongoose bikes must be assembled by a qualified bike mechanic - this is an international policy for Mongoose bikes.

Tyax Sport 27.5

Our flagship line of performance hardtail MTBs – the Tyax series – has everything a rider could need to start attacking the tough climbs and winding switchbacks that come with XC riding.

  • The Tyax Sport 27.5 is a high-performance hardtail MTB perfect for newcomers to XC trail riding. Suggested rider height by size: SM: 5’2” – 5’6”, MD: 5’5” – 5’10”, LG: 5'9" – 6'2.
  • Stiff, lightweight Tectonic T2 aluminium frame with tapered headtube, internal cable routing, replaceable hanger, and convertible QR dropouts.
  • 2 x 9 Shimano Acera drivetrain with 3-piece Shimano FC-MT101 aluminium cranks.
  • Xposure 100 mm travel fork with steel steerer and hydraulic lockout.
  • 27.5" x 2.20" Kenda Kadre tires on WTB ST-i29, aluminium double wall, tubeless compatible rims with Tektro HD-M290 hydraulic disc brakes.

FRAME: Tectonic T2, aluminum, 27.5" cross country geometry, internal cable routing, 9 mm x 141 mm QR dropout convertible to 12 mm x 148 mm thru axle, replaceable hanger, tapered headtube
FORK: Xposure, 27.5", steel steerer, hydraulic lockout, 9 mm x 100 mm, QR, 100 mm travel
CRANK: Shimano FC-MT101, aluminum, 36/22T
BOTTOM BRACKET: Shimano BB-UN100, cartridge, 3-piece, threaded 68 mm shell
SHIFTERS: Shimano Acera SL-M2000, 2 x 9
REAR COG: Sunrace, 9-speed, 11-36T
FRONT DERAILLEUR: Shimano FD-M4020, side swing, direct mount
REAR DERAILLEUR: Shimano Altus RD-M2000
RIMS: WTB ST-i29, aluminum double wall, 29 mm ID, 32H, tubeless compatible
FRONT HUB: Xposure, aluminum, ball bearing, 9 mm x 100 mm, 32H, 6-bolt
REAR HUB: Xposure, aluminum, ball bearing, 9 mm x 141 mm QR, 32H, 6-bolt
SPOKES: 14G, stainless steel
TYRES: Kenda, 27.5 in x 2.20 in, wire bead
BRAKES: Tektro HD-M290, hydraulic, aluminum, 160 mm rotor
HANDLEBAR: Xposure, double-butted aluminum, 740 mm width, 15 mm rise, 31.8 mm clamp
STEM: Xposure 3D forged aluminum, threadless, 60 mm/70 mm, 6°, 31.8 mm clamp
HEADSET: Threadless, ZS44/ZS56, retainer bearing
SEAT POST: Xposure, aluminum, 350 mm, zero offset, 31.6 mm
SADDLE: Steel railed
GRIPS: Xposure Kraton, semi-ergo lock on

*All specifications listed are subject to change without notice.* Accessories sold separately*

Geometry Table:

    SM MD LG
A Head Tube Angle (Degrees) 69.5 69.5 69.5
B Seat Tube Angle (Degrees) 74 74 74
C Horizontal Top Tube Length (mm) 595 600 630
D Seat Tube Length (mm) 435 450 495
E Standover Height (mm) 773.7 785.5 813.7
F Head Tube Length (mm) 110 115 120
G Chainstay Length (mm) 445 445 445
H Fork Offset (mm) 46 46 46
I Bottom Bracket Drop / Rise (mm) 59.5 59.5 59.5
J Wheelbase (mm) 1117.9 1123.3 1153.7
K Stack (mm) 631.6 636.3 641
L Reach (mm) 413.9 417.5 446.2
  Stem Length (mm) 60 80 80
  Bar Width (mm) 720 720 720
  Seat Post Size (mm) 31.6 31.6 31.6

Authorised Stores

Whangarei – NOW OPEN
Okara Park Shopping Centre, 42 Port Road Okara Park, Whangarei Central, Whangarei 0110

Auckland - Albany
6 Mercari Way, Albany, Auckland 0632

Auckland - Westgate
Shop H07, Fred Taylor Drive, Massey, Auckland 0814

Auckland - Mt Wellington
Apex Megacentre, 315-375 Mt Wellington Highway, Mt Wellington, Auckland 1060

Hamilton - Central
282 Barton Street, Hamilton 3204

Hamilton - The Base
The Base (Next to the Warehouse), Te Rapa Road & Wairere Drive, Te Rapa, Hamilton 3200

1170 Amohau St, Shop 9, Rotorua Central Mall , Rotorua 3010

41 Tamamutu Street, Taupo 3330

New Plymouth
1 Struthers Place, Valley Mega Centre, Waiwhakaiho, New Plymouth 4312

Tenancy 10, Tauranga Crossing, 2 Taurikura Drive, Tauranga 3110

3/87 Ford Road, Onekawa, Napier 4110

Palmerston North
250 Featherston Street, Palmerston North 4410

Wellington - Porirua
10 Semple Street, Porirua Mega Centre, Elsdon, Porirua 5022

Christchurch - Tower Junction
1 Picton Ave & Blenheim Road, Tower Junction, Addington, Christchurch 8011

Christchurch - Northlink
Unit B2 Northlink Centre, 148 Langdons Road, Northcote, Christchurch 8052

Cnr Rutherford and Bridge St, Nelson 7010

70/100 Leven Street, Invercargill 9810

205 Andersons Bay Rd, South Dunedin , Dunedin 9012

Racers Edge Wanaka
99 Ardmore Street, Wanaka 9305

The Forge Building, Cnr Camp & Shotover Streets, Queenstown 9300

Queenstown - Remarkables Park
Park Town Centre , 12 Hawthorne Drive, Queenstown

Read More

User Reviews

1 Review
Sort by: Newest First
Login & Write a Review
  • Mongoose Tyax
    Love the bike, solid but narrow frame, gears are well spaced out so great for trails but still easy to throw round the forest. Seat is pretty awful on the long trips but will upgrade soon enough. Over all i do reccomend the Tyax. However, picked up xmas eve and the bike was assembled terribly. Chain snapped on first ride, derailleur was way off position, brakes were real noisy, was lucky the chain broke as i was heading into the hills - if i had gone down the hills i would have lost my wheel as hub and wheel were not secured tightly. Found that out when i took it to my local shop and owner did a full service and check up and explained the "lack of" assembly. Cost me $60 but it has never gone better. Love riding it now.
    Blair Martin 9 Mar 2021

Write a review


While the Consumer Guarantee Act and Fair Trading Act provide the basis for our returns policy, we go a bit better than that:

If you're not 100% completely satisfied with your purchase we will happily accept your return and provide you with a store credit or a full refund to the value of the product's purchase price. You can return the product to any of our stores nationwide, or send it back to our Head Office. With our 30-day right of return policy there are no special catches it's extremely simple! All we ask is that you return the item back to us unused and in the original packaging, making sure that the product is in the same condition as you received it in, tags still intact. The only exceptions to our returns policy are: watches, underwear, socks, ear plugs, compression clothing, padded bike shorts and swimwear which we cannot accept back due to hygiene reasons.Torpedo7 Gift Cards are not redeemable for cash or refundable.