700c x 43/55c or 650b x 2.0/2.2" or 650b x 2.0/2.2".
Top-tube bag mount, rear rack + mudguard mounts and 4 sets of Bottle mounts
Type Gravel, T-Type XPLR 1x13v, 1x11v, 1x12v, 2x11v, 2x12v, Mechanical, Di2 or AXS, chainring 48/31 max ( chain line 47 mm ) or single chainring 44 teeth
Progressive mountain, fixed or 50 mm travel fork
Internal cable duct for rear light
Gravel
Hard gravel, alpine trail
The Chiru Alpin titanium gravel frame was developed following Yannick Lutz’s record-breaking tour of Mont-Blanc in 2019 in 12 hours and 27 minutes. Yannick achieved this feat by alternating racing and mountain biking. To follow Chiru’s reasoning to its logical conclusion, it was necessary to invent a single frame to pedal around the white giant, with a single bike!
Chiru Alpin, a titanium frame for steep slopes and technical mountain terrain
For added aggressiveness, the Chiru Alpin frame is equipped with a rigid 430mm titanium CEC fork (yes, that’s pure Chiru spirit!). If you prefer greater comfort on technical trails, Chiru Alpin can also be fitted with a short-travel telescopic fork (50mm). Chiru Alpin is designed for standard gravel drivetrains and wheels.
The choice of mountaineers looking for sensations, responsiveness and comfort
The rear triangle of the Chiru Alpin is designed with oval bases and stays attached at the top tube junction. It is equipped with the SRAM UDH derailleur hanger. Attachment points allow you to carry the luggage you need for short, technical mountain outings.
The Chiru Alpin titanium gravel frame was developed following Yannick Lutz's record-breaking tour of Mont-Blanc in 2019 in 12 hours and 27 minutes. Yannick achieved this feat by alternating racing and mountain biking. To follow Chiru's reasoning to its logical conclusion, it was necessary to invent a single frame to pedal around the white giant, with a single bike!
Chiru Alpin, a titanium frame for steep slopes and technical mountain terrain
For added aggressiveness, the Chiru Alpin frame is equipped with a rigid 430mm titanium CEC fork (yes, that's pure Chiru spirit!). If you prefer greater comfort on technical trails, Chiru Alpin can also be fitted with a short-travel telescopic fork (50mm). Chiru Alpin is designed for standard gravel drivetrains and wheels.
The choice of mountaineers looking for sensations, responsiveness and comfort
The rear triangle of the Chiru Alpin is designed with oval bases and stays attached at the top tube junction. It is equipped with the SRAM UDH derailleur hanger. Attachment points allow you to carry the luggage you need for short, technical mountain outings.
Ivan Couturier
| Material | Titanium Grade 9 3Al/2.5V, proprietary tubing with differentiated cross-section and thickness. |
| Finish | Brushed, Logo laser engraved |
| Tire clearance | 700c x 43/55c or 650b x 2.2" or 650b x 2.2". |
| Transmission compatibility | GRX 48x31T, or 44T (mechanical or Di2) SRAM Route (mechanical or AXS) Campagnolo Ekar |
| Bottom bracket compatibility | T47 x 85.5 mm |
| Through axis | Rear: 142x12 mm |
| Mounting points |
|
| Head tube | 56/44 mm conical |
| Rear brake mount | Flat mount 160 mm |
| Routing | Internal or external for derailleurs + rear brake hoses Internal for telescopic seat post Internal for rear lights |
| Seat post | Diameter 27.2 mm |
| Seat tube clamp | Diameter 31.8 mm |
| Accessories included |
|
| Material | Carbon |
| Finish | Mat clear varnish |
| Tire clearance | 700cx50c |
| Through axis | 100 x 12 mm x p1.5 |
| Mounting points |
|
| Pivot | tapered 1" 1/8-1.5", L: 300 mm, Integrated bearing range 45 deg |
| Routing | Internal to leg for front brake hose |
| Brake mount | Flat mount 160 or 180 mm |
| Length and offset | 420 x 45 mm |
| Weight | 500 g |
| Accessories included |
|
| Material | Carbon |
| Finish | Mat clear varnish |
| Tire clearance | 700cx60c |
| Through axis | 100 x 12 mm x p1.5 |
| Mounting points |
|
| Pivot | tapered 1" 1/8-1.5", Dia39.8; L : 350 mm |
| Routing | Internal to leg for front brake hose or internal + exit in pivot. Internal for dynamo cable |
| Brake mount | Flat mount 160 or 180 mm |
| Length and offset | 415 x 49 mm or 425 x 54 mm (reversible insert) |
| Weight | 520 g |
| Accessories included |
|
| Material | Titanium |
| Finish | Hand-brushed, laser-engraved logo |
| Tire clearance | 700c x 2.5" (64 mm) & 650b x 2.6" (2.6") |
| Through axis | 100x12 mm x p1.5 |
| Mounting points |
|
| Pivot | tapered 1" 1/8-1.5", L: 290 mm, diam. int. 25 mm |
| Routing | Internal for front brake hose Internal for dynamo cable |
| Brake mount | Flat mount 140 or 160 mm |
| Length and offset | 430 x 50 mm |
| Weight | 745 g |
| Accessories included |
|
| Type / Cage material | Internal bearing / Aluminum |
| Compatible model | All models with 85.5 mm BB shell width |
| Compatible crankset | Shimano 24 mm axle crankset |
| Bearing | ABEC-3 / Titanium nitride-coated bearing cage |
| Spacer | Aluminium, for BB shell width 85.5mm |
| Clamping crown | 16 notches / dia. 48.5 |
| Mounting tool | Park tool 27.3 |
| Color | Black |
| Material | Aluminum |
| Compatible model | All Chiru ranges after 2021 except Kunlun and Savage |
| Compatible derailleur | All types of derailleur: Sram, Shimano, Campagnolo, Rotor, Microshift |
| Axle compatibility | M12x1.0 |
| Color | Black |
| Material | Unidirectional Carbon |
| Accessory | Aluminium + 316 stainless steel screws |
| Length | 380 mm |
| Offset | 0 |
| Diameter | 27.2 mm |
| Saddle rail compatibility | 7 mm round or 7x10 mm carbon rail |
| Weight | 195 g |
| Material | Titanium 3Al/2.5V |
| Accessories | Titanium cradle + titanium screws |
| Length | 330 mm |
| Offset | 13 mm |
| Diameter | 27.2 mm |
| Saddle rail compatibility | 7 mm round or 7x10 mm carbon rail |
| Weight | 210 g |
| User weight limit | 100 kg |
| Body / screws material | Titanium 3Al/2.5V and 6Al/4V |
| Length | 60, 70, 80, 90, 100, 110mm |
| Angle | +/-5 Deg |
| Pivot clamping height | 48 mm |
| Handlebar clamping diameter | 31.8 mm |
| Width of handlebar clamping area | 50 mm |
| Finish | Hand-brushed, laser-engraved logo |
| Weight | 135 g |
| Material | Titanium 3Al/2.5V |
| Accessory | Titanium cradle + titanium screws |
| Length | 380 mm |
| Offset | 13 mm |
| Diameter | 27.2 mm |
| Saddle rail compatibility | 7 mm round or 7x10 mm carbon rail |
| Weight | 230 g |
| User weight limit | 100 kg |
| Material | Titanium 3Al/2.5V, Lazer soda |
| Adjustment range position | 25 mm |
| Bottle capacity | 600 to 800 ml |
| Fasteners | 2 x M5x10 Ti, Torx25 socket |
| Handling | Easy entry and exit |
| Maintenance | Secure, deformation-adjustable can holder |
| Finish | Sandblasting |
| Weight | 34 g |
| Size | S | M | L |
|---|---|---|---|
| TT (mm) | 545 | 575 | 600 |
| S (mm) | 420 | 450 | 475 |
| RC (mm) | 428 | 430 | 435 |
| W (mm) | 1086 | 1118 | 1145 |
| BB (mm) | 74 | 70 | 68 |
| HT (mm) | 135 | 150 | 180 |
| SA (deg.) | 74.5 | 74.5 | 74.1 |
| HA (deg.) | 67.7 | 68 | 68.3 |
| AC (mm) | 427 | 427 | 427 |
| O (mm) | 50 | 50 | 50 |
| ST (mm) | 576 | 587 | 615 |
| R (mm) | 401 | 431 | 443.8 |
| Rider (cm) | Inseam (cm) | Frame |
|---|---|---|
| 162-173 | - | S |
| 172-180 | - | M |
| 180-188 | - | L |
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