2021 Transition Spire - Everything You Need To Know

Transition Spire Alloy Bike

Introducing the 2021 Transition Spire - a completely new bike built around 29" wheels and 170 mm of travel, available in carbon or alloy. Our first deliveries of carbon and aluminium frames and complete bikes will be arriving between June and August.

Both alloy and carbon frames are recognisably Transitions, with the same shaped top tube and design with a clean line from head tube to rear axle as the current models. The new bike features the same updated Giddy Up suspension platform as the new Patrol, with improved mid-stroke support and small bump compliance.

Available in 5 sizes, the new Spire has a shock mount flip chip to adjust the geo and a new parallel headtube allowing you to change reach and headtube angle. The 2021 Spire and Patrol both feature Transitions new straight 56 mm head tube. Both bikes are supplied with standard ZS56/ZS56 headsets, but you can change to an angleset if you want to change reach or head angle. Out the box, in the high setting, the Spire's 63 degree head angle is already pretty slack.

Transition Spire Carbon Bike

All models use 165 mm cranks and though the Spire is at first glance similar to the Patrol, the longer chainstays and other smaller changes will make it more of a plougher than the Patrol. Transition say you can run the bike with a 27.5 rear wheel if you really want, and it will be fine (the Patrol chainstays are too short to run it was a full on 29er). There's clearance for 2.6 tyres and frame protection on the chainstay and seat stay.

If you would like to order a bike, please call us on 01330 828562 to leave a deposit. (You can read more about ordering bikes from 20Twenty here.)

We've put all the information we have so far on this page, so scroll on for the geo, spec choices and prices. The spec lists have links to the bike pages.

Transition Spire Geo

High Setting

Small

Medium

Large

X-Large

XX-Large

Reach

430

460

485

510

535

Stack

619

619

628

637

646

Effective TT Length

547

577

605

633

661

Seat Tube Length

360

390

430

460

490

Effective ST Angle

79.6

78.8

78.1

77.5

77.2

Saddle Height For Effective ST Angle

600

660

720

780

820

Actual ST Angle

70.5

70.5

70.5

70.5

70.5

Seat Tube Offset At BB

100

100

100

100

100

Headtube Length

100

100

110

120

130

Head Tube Angle

63.0

63.0

63.0

63.0

63.0

Chainstay Length

446

446

446

452

452

Wheelbase

1227

1257

1287

1322

1352

Bottom Bracket Drop

25

25

25

25

25

Estimated BB Height

350

350

350

350

350

Stand Over Height

685

700

715

730

745

Fork Offset

44

44

44

44

44


Low Setting (Approx.)

Small

Medium

Large

X-Large

XX-Large

Reach

425

455

480

505

530

Stack

624

624

633

642

651

Effective TT Length

550

580

608

636

664

Seat Tube Length

360

390

430

460

490

Effective ST Angle

79.1

78.3

77.6

77.0

76.7

Saddle Height For Effective ST Angle

600

660

720

780

820

Actual ST Angle

70.0

70.0

70.0

70.0

70.0

Seat Tube Offset At BB

100

100

100

100

100

Headtube Length

100

100

110

120

130

Head Tube Angle

62.5

62.5

62.5

62.5

62.5

Chainstay Length

448

448

448

454

454

Wheelbase

1229

1259

1289

1324

1354

Bottom Bracket Drop

32

32

32

32

32

Estimated BB Height

343

343

343

343

343

Stand Over Height

685

700

715

730

745

Fork Offset

44

44

44

44

44

Transition Spire Alloy Spec

We can offer you a complete bike, and while each model has an excellent spec, if there's anything you'd like to change or upgrade, get in touch! If you really want something unique, get in touch and we'll build you the bike of your dreams.

The Deore spec'd bikes will only be available for a short while, they will be replaced with an NX bike.

Model

Spire Alloy XT

Spire Alloy GX

Spire Alloy Deore

Spire Alloy Frameset

UK Price

£5,399.95

£4,699.95

£3,699.95

£2,199.95

Rear Shock

Fox Float X2 Factory 2 Position (170 mm Travel/205x65 mm)

RockShox Super Deluxe Ultimate Air (170 mm Travel/205x65 mm)

Fox Float DPX2 Performance (170 mm Travel/205x65 mm)

Fox Float X2 Factory 2 Position (170 mm Travel/205x65 mm)

Fork

Fox Float 38 Grip 2 Factory 29 (170 mm Travel/44 mm Offset)

RockShox ZEB Ultimate (170 mm Travel/44 mm Offset)

Marzocchi Bomber Z1 Air 29 (170 mm Travel/44 mm Offset)

Headset

FSA NO.55R/57

FSA NO.55R/57

FSA NO.55R/57

FSA NO.55R/57

Stem

ANVL Swage (40 mm)

ANVL Swage (40 mm)

RaceFace Aefect R (40 mm)

Bar

ANVL Mandrel Alloy

ANVL Mandrel Alloy

RaceFace Chester

Grips

Sensus Lite

Sensus Lite

Sensus Lite

Sadde

ANVL Forge Cromo or WTB Silverado Cromo

ANVL Forge Cromo or WTB Silverado Cromo

ANVL Forge Cromo or WTB Silverado Cromo

Seatpost

OneUp Dropper Post

OneUp Dropper Post

OneUp Dropper Post

Brakes

Shimano XT M8120

SRAM Code RSC

Shimano Deore M6120

Rotors

Shimano RT86 (203 mm)

SRAM Centerline (200 mm)

Shimano RT70 (203 mm)

Shifter

Shimano XT M8100

SRAM GX Eagle

Shimano Deore M6100

Derailleur

Shimano XT M8100

SRAM GX Eagle

Shimano Deore M6100

Cassette

Shimano XT M8100 (10-51t)

SRAM XG 1275 (10-52t)

Shimano Deore M6100 (10-51t)

Chain

Shimano XT M8100

SRAM GX Eagle

Shimano Deore M6100

Crank

Shimano XT M8100 (30t/165 mm)

SRAM GX Alloy DUB (30t/165 mm)

RaceFace Aeffect R (30t/165 mm)

Chainguide

OneUp Bash Guide V2

OneUp Bash Guide V2

OneUp Bash Guide V2

Wheelset/Rims

DT Swiss EX 1700 Spline 30

Stans Flow S1

Stans Flow D

Spokes

DT Swiss Competition

Sapim Race Double Butted

Pillar Double Butted

Hubs

DT Swiss 350 Straight Pull 36SL

Stans Neo Durasync

Shimano MT410-B

Front Tyre

Schwalbe Magic Mary, Super Trail,Soft (29x2.4)

Schwalbe Magic Mary, Super Trail,Soft (29x2.4)

Schwalbe Magic Mary, Super Trail,Soft (29x2.4)

Rear Tyre

Schwalbe Big Betty, Super Trail, Soft (29x2.4)

Schwalbe Big Betty, Super Trail, Soft (29x2.4)

Schwalbe Big Betty, Super Trail, Soft (29x2.4)

Other

Tubeless Valves & Stans Sealant (6oz)

Tubeless Valves & Stans Sealant (6oz)

Tubeless Valves & Stans Sealant (6oz)

Spire Carbon Spec

Model

Spire Carbon XT

Spire Carbon GX

Spire Carbon Frameset

UK Price

£6,499.95

£5,799.95

£3,299.95

Rear Shock

Fox Float X2 Factory 2 Position (170 mm Travel/205x65 mm)

RockShox Super Deluxe Ultimate Air (170 mm Travel/205x65 mm)

Fox Float X2 Factory 2 Position (170 mm Travel/205x65 mm)

Fork

Fox Float 38 Grip 2 Factory 29 (170 mm Travel/44 mm Offset)

RockShox ZEB Ultimate 29 (170 mm Travel/44 mm Offset)

Headset

FSA NO.55R/57

FSA NO.55R/57

FSA NO.55R/57

Stem

ANVL Swage (40 mm)

ANVL Swage (40 mm)

Bar

ANVL Mandrel Alloy

ANVL Mandrel Alloy

Grips

Sensus Lite

Sensus Lite

Sadde

ANVL Forge Cromo or WTB Silverado

ANVL Forge Cromo or WTB Silverado

Seatpost

OneUp Dropper Post

OneUp Dropper Post

Brakes

Shimano XT M8120

SRAM Code RSC

Rotors

Shimano RT86 (203 mm)

SRAM Centerline (200 mm)

Shifter

Shimano XT M8100

SRAM GX Eagle

Derailleur

Shimano XT M8100

SRAM GX Eagle

Cassette

Shimano XT M8100 (10-51t)

SRAM XG 1275 (10-52t)

Chain

Shimano XT M8100

SRAM GX Eagle

Crank

Shimano XT M8100 (30t/165 mm)

SRAM GX Alloy DUB (30t/165 mm)

Chainguide

OneUp Bash Guide V2

OneUp Bash Guide V2

Wheelset/Rims

DT Swiss EX 1700 Spline 30

Stans Flow S1

Spokes

DT Swiss Competition

Sapim Race Double Butted

Hubs

DT Swiss 350 Straight Pull 36SL

Stans Neo Durasync

Front Tyre

Schwalbe Magic Mary, Super Trail, Soft (29x2.4)

Schwalbe Magic Mary, Super Trail, Soft (29x2.4)

Rear Tyre

Schwalbe Big Betty, Super Trail, Soft (29x2.4)

Schwalbe Big Betty, Super Trail, Soft (29x2.4)

Other

Tubeless Valves & Stans Sealant (6oz)

Tubeless Valves & Stans Sealant (6oz)


Item is added to cart